If a needle turning upon a pivot were fixed at York, and if, by a wire placed in close proximity to it, the needle could be made to move to the right or to the left through the agency of a power applied at the other end of the wire in London, and if it were agreed that one motion of the needle to the left should signify a, and one to the right b, &c.,[33] we should have just such a contrivance as the common needle telegraph now in use. Such is the dry statement of a problem the more detailed working of which we are about to explain to the reader. When a schoolboy places a sixpence and a piece of zinc in juxta-position with each other in his mouth, he immediately Fig. 1 Fig. 2 If now we place a piece of zinc, Z, and of copper, C, in a glass of acidulated water, instead of in the saliva of the mouth, and if we then attach to the piece of zinc the wire D K, and to the piece of copper the wire B A, and approximate the two ends, A K, until they touch, we shall have the philosophic expression of the contrivance of the boy—a decomposition of the water will immediately take place, and either as its cause or consequence—for scientific men have not yet decided which—an electric current will flow in a continued stream from the zinc plate or positive pole to the copper plate or negative pole of the battery, and this action, provided the plates are kept clean and the acidulated water is supplied, will go on as long as the materials last. If this little instrument, which generates a very small amount of electric force, is combined with others, as in figure 2,—the zinc plate of one cell being connected with the copper plate of the next by a piece of wire—we shall have the celebrated battery invented by Volta in 1800, in which the accumulated current, after flowing from one cell into another, by means of the little hoops of wire, is transmitted along the large hoop, D K A B, from the one pole of the battery to the other. Within the narrow chambers of some such battery (which may be made of any number of cells, according to the force required), the motive power is generated by which the electric telegraph is worked, and the large hoop by which Fig. 3 There was yet a third thing necessary—some contrivance by which the force could be made instrumental in forming signs or characters at its destined goal; and this final condition was supplied by Oersted’s discovery in 1819, that a magnetic needle is deflected by the passage of a circuit of electricity through a wire parallel and in close neighbourhood to it. The following cut will explain our meaning:—When the fluid passes from the U pole of the battery in the direction of B A K L M Z, and enters V, its opposite pole, “a current,” as it is called, is completed, running from left to right, the effect of which upon the needle, N, is to deflect it in the direction of the dotted line (seen in perspective) 2, 3, or to an angle of 90 degrees, with the wire, if the current is sufficiently strong. If, however, the current be reversed, and the electric fluid made to traverse the wire from right to left, in the direction of the letters V Z M L K A B to the U end of the battery, the needle will immediately reverse its position and place itself at 90 degrees in the opposite direction. This then is the whole principle and mystery of the needle telegraph, the one still most extensively used in this country. The break that occurs Fig. 4 The mere fact, however, of an electric current passing along a wire in proximity to a magnetic needle was not sufficient to enable any person to construct a telegraph. Would the needle be deflected by a wire, the battery of which was placed at any considerable distance? it would not; therefore, for all telegraphic purposes Oersted’s discovery was worthless. Schweigger, however, soon after ascertained that by passing a great number of times round the needle a wire, thoroughly insulated by a “serving” of silk thread, as shown in figure 4, the deflecting powers of the currant were multiplied, and the sensibility of the instrument marvellously increased. Fig. 5 In the same year that Oersted made his brilliant discovery, M. Arago detected another law, which furnished a second method by which the electric current could be made to tell its tale. He announced to the French Academy the fact so pregnant in its consequences, that the fluid possessed the power of imparting magnetism to steel or iron; and shortly afterwards our own countryman, Sturgeon, invented the first electro-magnet, by coiling around a piece of soft iron a great length of fine insulated copper wire, the ends of which communicated with a battery. Figure 5 will give a rough idea of this instrument. The wire U B A, when it reaches the cylinder K L, is wound many times round it, and returns to the battery at V. As long as the current is passing, the soft iron becomes a magnet and attracts the iron armature P; but directly the circuit is broken its magnetic power ceases, and P, by the action of a spring, Since the year 1821 the principles of action of two of the working telegraphs of the present day were known to scientific men, and the question naturally arises, how was it that it still took so many years to make the telegraph a working fact? The answer is, that the combination of circumstances necessary to bring it to perfection had not arisen. What interest had A problem of great scientific interest as well as of practical importance in connection with the electric telegraph had still to be solved. The experiments of Dr. Watson on Shooter’s Hill, in the middle of the last century, proved, it is true, that a shock of electricity passed along a four mile circuit without any appreciable loss of time, but nothing was definitely known about the speed at which it really travelled. This difficult question was answered by Professor Wheatstone. His beautiful investigations on the subject were made by means of a very rapidly revolving mirror, upon which the passage of the electric fluid, at different and distant parts of a severed wire, was indicated by sparks, which appeared as lines of light on the rapidly turning glass, on the same principle that a bit of lighted charcoal whirled round and round in the air appears as a circle of fire. By this instrument, which we cannot render By this experiment it appeared that electricity travels through a copper-wire with at least the velocity of light through the celestial space, though the recent experiments made for Professor Bache, director of the national survey of America, have proved that the velocity of the current through suspended iron wires is not more than 15,400 miles per second. The philosophic proof of the marvellous rate at which the electric current moved, doubtless turned many minds once more in the direction of the long sought for telegraph, and it is not surprising that the eminent elucidator of the fact was among the number. A short time after this he insulated four miles of wire in the vaults of King’s College, on which he performed most of his subsequent experiments.[34] Thus in the Following up his experiment, Professor Wheatstone worked out the arrangements of his telegraph, and having associated himself in 1837 with Mr. Cooke, who had previously devoted much time to the same subject, a patent was taken out in the June of that year in their joint names. Their telegraph had five wires and five needles; the latter being worked upon the face of a lozenge-shaped dial inscribed with the letters of the alphabet, any one of which could be indicated by the convergence of two of the needles. This very ingenious instrument could be manipulated by any person who knew how to read, and did not labour under the disadvantage of working by a code which required time to be understood. Immediately upon the taking out of the patent, the directors of the North Western Railway sanctioned the laying down of wires between the Euston Square and Camden Town stations, and towards the end of July the telegraph was ready to work. A frequently renewed and still unsettled controversy has arisen upon the point of who is to be considered the first contriver of the telegraph in the form which made it available for popular use. Two names alone are now put forward to dispute the claim with Wheatstone—Steinheil of Munich and Morse of New York. From a communication of M. Arago to the French Academy of Sciences, it appears that the telegraph of Steinheil was in operation, for a distance of seven miles, on the 19th of July, 1837, the same month in which Wheatstone put his own contrivance to the test upon the North Western Railway. But besides that the patent of Wheatstone was taken out in the preceding June, and was itself founded upon previous and thoroughly successful experiments, there is another material circumstance which gives him a claim to priority over Steinheil, viz., that the latter published no description of his instrument Morse dates his claim to the invention of the telegraph from the year 1832, when the first idea of such an instrument, he tells us, struck him as he was returning home from Havre in the ship Sully. A fellow-passenger, Professor Jackson, it appears, was in the habit of amusing himself, in common with the rest of the passengers, with some accounts of the wonders of electricity; and when Morse later developed his contrivance, Professor Jackson not only claimed it as a plagiarism from his own conversation, but added that Morse was so ignorant as to ask, upon hearing the term Electro-Magnetism, “In what does that differ from ordinary Magnetism?” The telegraph was at best, on the part of both of them, a crude idea; and it was not till September, 1837, that Professor Morse was able to exhibit his still imperfect machinery in action. He ultimately succeeded, as we have before stated, in producing a telegraph of first-rate excellence; and, out of 15,000 miles of wire which had been erected by 1852 in the United States, 12,124 were worked on the system of Morse. The question of priority is, in our opinion, after all, of no sort of importance, at least as regards the rival claims of Wheatstone and Steinheil. When the progress of science has prepared the way for a great discovery, two geniuses will occasionally take the step together, because each is able to take the step of a giant. It was thus that the Calculus was found out by both Newton and Leibnitz, and the place of Neptune in the heavens by both Adams and Leverrier. It was the same with the telegraph. The investigations of Wheatstone and Steinheil There are some who dispute Professor Wheatstone’s claim, by urging that, inasmuch as all the main features of the telegraph existed before he took out his patent, there was nothing left to invent. It is true that much had been done, but it is equally certain that there was much to do. When Wheatstone first directed his attention to electricity as a means of communicating thoughts to a distance, the telegraph was a useless and inoperative machine. He and his partner established as a working, paying fact, what had hitherto been little better than a philosophic toy. To those who now disparage the Professor’s labours we think it sufficient to reply by the admirable saying of the French savant, M. Biot, “Nothing is so easy as the discovery of yesterday; nothing so difficult as the discovery of to-day.” Let us return, however, to the history of the telegraph in England, from which we have digressed. After the successful working of the mile-and-a-quarter line, the Directors of the London and Birmingham Railway proposed to lay it down to the latter town if the Birmingham and Liverpool Directors would continue it on their line; but they objected, and the telegraph received notice to quit the ground it already occupied. Of course, its sudden disappearance would have branded it as a failure in most men’s minds, and, in all probability, the telegraph would have been put back many years, had not Mr. Brunel, to his honour, in 1839, determined to adopt it on the Great Western line. It was accordingly carried at first as far as West Drayton, thirteen miles, and afterwards to Slough, a distance of eighteen miles. The wires were not at this early date suspended upon posts, but insulated and encased in an iron tube, which was placed beneath the ground. The telegraph hitherto had been strictly confined to railway business, and in furtherance of this object Brunel proposed to continue it to Bristol as soon as the line was opened. Here, again, the folly and blindness of railway proprietors threw obstacles in the way, which led, however, to an unlooked-for To keep the wires on the ground, Mr. Cooke proposed to maintain it at his own expense, and was permitted by the directors to do so on condition of sending their railway signals free of charge, and of extending the line to Slough. In return, he was allowed to transmit the messages of the public. Here commences the first popular use of the telegraph in England, or in any other country. The tariff was one shilling per message. The effect of this low charge was to develop a class of business which seems beneath the notice of the powerful company now in possession of most of the telegraphic lines in the kingdom. The transactions of the retail dealers are considered too petty, perhaps, for their attention; but there can be no doubt that the comfort of the public would be vastly increased, and also the revenues of the company, if they would only condescend to take a lesson by the commercial experience of this shilling tariff, the working of which we will illustrate by transcribing from the telegraph book at Paddington a few specimens of the messages sent:— “Commercial News. 1844, Nov. 1, Slough, 4.10 P.M.—‘Send a messenger to Mr. Harris, poulterer, Duke-street, Manchester-square, and order him to send twelve more chickens to Mr. Finch, High-street, Windsor, by the 5.0 P.M. down train, without fail.’ Answer: Paddington, 5.5 P.M.—‘The chickens are sent by the 5.0 P.M. train.’ “Slough, 7.35 P.M.—‘A Mr. Thomas B., a first-class passenger, 6.30 P.M. train, left a blue cloak with a velvet collar in first-class booking-office. Send it by mail train if found.’ “Paddington 7.45 P.M.—‘There are two such cloaks in the booking-office: has Mr. B.’s any mark on any part of it?’ Slough, 7.47 P.M.—‘Mr. B.’s has the mark × under the collar, inside.’ “Paddington, 7.55 P.M.—‘Cloak found, and will be sent on as requested.’ “Slough, Nov. 11, 1844, 4.3 P.M.—‘Send a messenger to Mr. Harris, “Paddington, 5.27 P.M.—‘Messenger returned with articles which will be sent by 5.30 train, as requested.’” The first application of the telegraph to police purposes took place about this time on the Great Western Railway, and, as it was the first intimation thieves got of the electric constable being on duty, it is full of interest. The following extracts are from the telegraph book kept at the Paddington station:— “Eaton Montem day, August 28, 1844.—The Commissioners of Police have issued orders that several officers of the detective force shall be stationed at Paddington to watch the movements of suspicious persons, going by the down-train, and give notice by the electric telegraph to the Slough station of the number of such suspected persons, and dress, their names if known, also the carriages in which they are.” Now come the messages following one after the other, and influencing the fate of the marked individuals with all the celerity, certainty, and calmness of the Nemesis of the Greek drama:— “Paddington, 10.20 A.M.—‘Mail train just started. It contains three thieves, named Sparrow, Burrell, and Spurgeon, in the first compartment of the fourth first-class carriage.’ “Slough, 10.48 A.M.—‘Mail train arrived. The officers have cautioned the three thieves.’ “Paddington, 10.50 A.M.—‘Special train just left. It contained two thieves: one named Oliver Martin, who is dressed in black, crape on his hat; the other named Fiddler Dick, in black trowsers and light blouse. Both in the third compartment of the first second-class carriage.’ “Slough, 11.16 A.M.—‘Special train arrived. Officers have taken the two thieves into custody, a lady having lost her bag, containing a purse with two sovereigns and some silver in it; one of the sovereigns was sworn to by the lady as having been her property. It was found in Fiddler Dick’s watch-fob.’” It appears that, on the arrival of the train, a policeman opened the door of the “third compartment of the first second-class carriage” and asked the passengers if they had missed anything? A search in pockets and bags accordingly ensued, until one lady called out that her purse was gone. “Fiddler Dick, you are wanted,” was the immediate demand of the police-officer, beckoning to the culprit, who came out of the carriage thunderstruck at the discovery, and gave himself up, together “Slough, 11.51 A.M.—‘Several of the suspected persons who came by the various down-trains are lurking about Slough, uttering bitter invectives against the telegraph. Not one of those cautioned has ventured to proceed to the Montem.’” Ever after this the lightfingered gentry avoided the railway and the too intelligent companion that ran beside it, and betook themselves again to the road—a retrograde step, to which on all great public occasions they continue to adhere. The telegraph, even up to this period, was very little known to the great mass of the public, and might have continued for some time longer in obscurity but for its remarkable agency in causing the arrest of the quaker Tawell. This event, which took place on the afternoon of Friday, January 3rd, 1845, placed it before the world as a prominent instrument in a terrible drama, and at once drew universal attention to its capabilities. It must not be imagined, however, that Mr. Wheatstone’s was the only patent taken out for a telegraph in the year 1837. A number of inquiring minds were simultaneously with the Professor wandering in the tangled wood of doubt, and when he burst his way through, others speedily emerged at different points, one after another. Consequently, the year 1837 was distinguished by a complete crop of telegraphs, any one of which would perhaps have held its ground had it stood alone, but not one of them was practically equal to the first, and they have all long since departed to the tomb, already stored with the abortive results of so many merely ingenious minds. The rapidity with which the needle instrument transmits messages, the small amount of electricity required to work it, and the simplicity of its construction, are its chief recommendations. Upwards of 200 letters can be forwarded by it within the minute. Its great drawback—a drawback that will appear greater every year—is that it can only be worked by a system of signs, which requires some practice to understand. This latter instrument appears to contain within itself capabilities of very high excellence; for instance, it requires no one to interpret, and then to re-write its messages—this it does itself. In fact it extends the compositor’s fingers as far as the wire can be stretched. Messages are thus printed at the rate of fifty letters a minute, say at five hundred miles distance, in common Roman characters, on long slips of paper similar to those used on the recording instrument. Any description of its complicated mechanism would be utterly unintelligible to general readers. “While the arrangements of the telegraph of Morse,” said Mr. Justice Woodbury, of America, in giving judgment in a patent case, “can be readily understood by most mechanics and men of science, it requires days, if not weeks with some, thoroughly to comprehend all the parts and movements of the telegraph of House.” His system is in use for thousands of miles of the American lines. Bakewell’s copying telegraph is naturally suggested by the telegraph of House, from the fact that it reproduces its messages, although in a different manner. The sender of the message may be said to write with a pen long enough to stretch to the most distant correspondent; that is, he not only forwards instantaneously the substance of a message, but it is conveyed in his own handwriting. The principle is similar to that of Davy’s chemical recording telegraph. The person sending the message writes it on a piece of tin foil with a pen dipped in varnish or any other non-conducting substance; this message is then placed round a metal cylinder, which is made to revolve at a certain regulated To return, however, to our subject after this little digression. At the same time that the first working telegraph was being simplified and improved, the system was gradually spreading, and, by the end of the year 1845, lines exceeding 500 miles in extent were in operation in England, working Messrs. Wheatstone and Cook’s patents. In the following year, capital, as represented by the powerful Electric Telegraph Company, commenced its operations, and an immediate and rapid development of the new method of carrying intelligence was the result. “A period of eight years has elapsed,” as they say in a certain class of drama, and let us now look upon the condition of electric-telegraphy in England. We left it exerting its influence in a disjointed manner over a few railways, and striking out its wires here and there at random, without governing head or organization; and how do we find it? Jammed in between lofty houses, at the bottom of a narrow court in Lothbury, we see before us a stuccoed wall, ornamented with an electric illuminated clock. Who would think that behind this narrow forehead lay the great brain,—if we may so term it,—of the nervous system of Britain, or that beneath And now, like a curious physiologist, let us examine the various parts of this ingeniously-constructed sensorium, and endeavour to show our readers how in this high chamber, fashioned by human hands, thoughts circulate, and ideas come and go. The door of the “Central Telegraph Station” leads immediately into the Central Hall, an oblong space, open quite up to the roof, which presents an appearance something like the Coal Exchange or the Geological Museum, two tiers of galleries being suspended from the bare walls, and affording communication to the different parts of the building. If we ascend the first gallery, and lean over the balustrade, we shall get a very clear bird’s-eye view of the method in which messages are received and transmitted. Here, man, like the watchful spider, sits centered within his radiating web, and “lives along the line.” Beneath us runs a sweep of counter forming three sides of a quadrangle, divided into compartments of about a square yard by green curtains. A desk and printed forms, to be filled up, are placed in each of these isolated cells, towards which we see individuals immediately make, and then bury themselves, being for the time profoundly intent upon the printed form. We all know the jocose excuse of the correspondent for having written a long letter—that he had not time to make it shorter. And truly it requires some art to be laconic enough “Messages (not exceeding twenty words) can be sent between all the principal towns in Great Britain at a charge of 1s. within a circuit of 50 miles, of 2s. 6d. within a circuit of 100 miles (geographical distance), and of 5s. beyond a circuit of 100 miles, with an additional sum of 6d. porterage within half a mile of the station.” “Economy,” says a French writer, M. de Courcy, “teaches conciseness. The telegraphic style banishes all the forms of politeness. ‘May I ask you to do me the favour,’ is 6d. for a distance of fifty miles.” How many of those fond adjectives, therefore, must our poor fellow relentlessly strike out to bring his billet down to a reasonable charge! What food for speculation each person affords, as he writes his hurried epistle, dictated either by fear, or greed, or more powerful love!—for we have not yet got into the habit of employing the telegraph, like the Americans, on the mere every-day business of life. Every message—and of these there are 350,000 transmitted by this Company yearly for the public, and upwards of 3,500,000 for the Railways—is faithfully copied, and put by in fire-proof safes, those sent by the recording telegraph being wound in tape-like lengths upon a roller, and appearing exactly like discs of sarcenet ribbon. Fancy some future Macaulay rummaging among such a store, and painting therefrom the salient features of the social and commercial life of England in the nineteenth century. If from the Household Book of the Duke of Northumberland, or still later, from the Paston Letters, we can catch such glimpses of the manners of an early age, what might not be gathered some day in the twenty-first century from a record of the correspondence of an entire people? “Softly, softly,” interposes the Secretary of the Company, “we have no such intention of gratifying posterity; for, after a certain brief period all copies of communications are Whilst we have been thus speculating, however, a dozen messages for all parts of the kingdom have successively ascended, through the long lift before us, to the instrument-rooms, of which there are two, situated in the attics of the establishment, on either side of the top gallery of the central hall; these, to carry out our anatomical simile, might be called the two hemispheres of the establishment’s cerebrum. The instruments of one of these rooms are worked by youths, while those of the other are manipulated by young ladies; and it seems to us as though the directors were pitting them against each other—establishing a kind of industrial tournament—to see which description of labourer is worthiest. As yet, little or no difference can be detected: this, however, is in itself a triumph for the fair sex, as it proves their capacity for a species of employment well calculated for their habits and physical powers, and opens another door for that superabundance of female labour of a superior kind which has hitherto sought employment in vain. Click, click, go the needles on every hand as we enter. Here we see the iron tongues of the telegraph wagging, and talking as fast as a tea-table full of old maids. London is holding communication with Manchester. Plymouth is listening attentively to a long story, and every now and then intimates by a slight movement that he perfectly comprehends. But there is one speaker whose nimble tongue seems to be saying important things by the stir around him,—that is the Hague whispering under the North Sea the news he has heard, an hour or so ago, from Vienna of a great victory just gained by the Turks. We are witness to a series of conversations carried on with all There are but two kinds of telegraph used by the company, the needle telegraph and a few of the chemical recording telegraph of Bain. The latter instrument strikes the spectator This system is used extensively in America. A weaker current of electricity than what is required for deflecting needles or magnetising iron, suffices to effect the requisite chemical decomposition. The conducting power of vapour or rain carries much of the electricity from the wires in certain states of the atmosphere; “and in such cases, where both Morse’s and Bain’s telegraphs are used by an amalgamated company in the same office, it is found convenient to remove the wires from Morse’s instruments, and connect them with Bain’s, on which it is practicable to operate when communication by Morse’s system is interrupted.”—(Whitworth’s Report, p. 51.) This chemical telegraph has also the advantage, in common with all recording instruments, that it leaves an indelible record of every message transmitted, and therefore is very useful when the mistake of a single figure or letter might be of consequence, which we will illustrate by a case which happened very lately. A stockbroker in the City received, during a very agitated state of the funds, an order to buy for a client in a distant part of the country, by a certain time of the day, 80,000l. of consols. This order being unusually large for the individual, the broker doubted its accuracy, and immediately made inquiries at the office. The message had luckily been sent by the recording instrument, and upon looking at the record it was immediately seen that the order was for 8,000l., the transcriber having put in an 0 too much, for which, according to the rules of the company, he was incontinently fined. Now, here the error was immediately traced to the person who made it, and there was no need of telegraphing back to inquire if all were right, two matters of vital importance in such a transaction as this, involving so much personal responsibility; for if the purchase had been made and turned out unfortunate, the loss would indubitably have fallen upon the unhappy sharebroker.[36] On Friday evening especially this department is very busy condensing for the country papers the news which appears in that exciting column headed “By Electric Telegraph, London, 2 A.M.” Thus the telegraph rides express through the night for the broadsheets of the entire kingdom, and even steps across from Portpatrick to Donaghadee into the sister country, with its budget of latest intelligence, by which means the extremities of the two islands are kept as well up in the progress of important events as London itself. Upwards of 120 provincial papers each receive in this manner their column of parliamentary news of the night; and the Daily Mail, published in Glasgow, gets sometimes as much as three columns of the debates forwarded whilst the House is sitting. A superintendent and four clerks are expressly employed in this department; and early in the day, towards the end of the week, the office presents all the appearance of an editor’s room. At seven in the morning the clerks are to be seen deep in the Times and other daily papers, just hot from the press, making extracts, and condensing into short paragraphs all the most important events, which are immediately sent off to the country papers to form “second editions.” Neither does the work cease here; for no sooner is a second edition published in town, than its news, if of more than ordinary interest, is transmitted to the provinces. For instance: whilst we were in the company’s telegraph room a short time since, the following intelligence was being served out “Eastern War—Battle on the Danube—From Evening Edition of the ‘Morning Chronicle.’ “Vienna, Saturday, April 8th. “The journal Fremden Blatt announces, under date of Bucharest, 4th April, that a great battle was being fought at Rassova, about midway between Hirsova and Silistria, in the Dobrudscha. The result was not known. Mustapha Pasha is at the head of 50,000 men.” Arrived at the above-mentioned places, swifter than a rocket could fly the distance, like a rocket it bursts, and is again carried by the diverging wires into a dozen neighbouring towns. The announcement we have quoted comes opportunely to remind us that intelligence thus hastily gathered and transmitted has also its drawbacks, and is not so trustworthy as the news which starts later and travels slower. The “great battle of Rassova” has not yet been fought, and the general action announced through the telegraph was only a sanguinary skirmish. The telegraphic organization of London, meagre as it is at present, would form alone a curious paper: “a province covered with houses,” it demands a special arrangement, and accordingly we see day by day new branches opened within its precincts, by which means every part of the metropolis is being put in communication with the country and Europe. The branch stations are, London Docks (main entrance); No. 43, Mincing Lane; General Post Office, St. Martin’s-le-Grand; No. 30, Fleet Street; No. 448, West Strand; No. 17a, Great George Street, Westminster; No. 89, St. James’s Street; No. 1, Park Side, Knightsbridge; No. 6, Edgeware Road; Great Western Railway Station; London and North-Western Railway Station; Great Northern Railway Station; Highbury Railway Station; Eastern Counties’ Railway Station; Blackwall Railway Station; London and Brighton and South Coast Railway Station; and the London and South-Western Railway Station; of these only two are open night and day. The central office, strange as it might appear, is closed at half-past 8 o’clock P.M., and its wires are put in connection with those at the Charing Cross Station, which takes upon itself the night work—a We have yet, however, to notice the special telegraphic communication which exists in the metropolis between place and place, either for governmental purposes or for social convenience. The most curious of these lines is the wire between the Octagon Hall in the new Houses of Parliament and the St. James’s Street Commercial station. They should name this line from the “whipper-in” of the House, for it is nothing more than a call-wire for members. The company employ reporters during the sitting of Parliament, to make an abstract from the gallery of the business of the two Houses as it proceeds; and this abstract is forwarded, at very short intervals, to the office in St. James’s Street, where it is set up and printed, additions being made to the sheet issued as the MS. comes in. This flying sheet is posted half-hourly to the following clubs and establishments:—Arthur’s; Carlton; Oxford and Cambridge; Brook’s; Conservative; United Service; AthenÆum; Reform; Traveller’s; United University; Union; and White’s; hourly to Boodle’s Club and Prince’s Club; and half-hourly to the Royal Italian Opera. The shortest possible abstract is of course supplied—just sufficient, in fact, to enable the after-dinner M.P. so to economize his proceedings as to be able to finish his claret, and yet be in time for the ministerial statement, or to count in the division. The wire to the Opera is a still more curious example of the social services the new power is destined to perform. An abstract of the proceedings of Parliament, similar to the above, but in writing, is posted, during the performance, in the lobby; and Young England has only to lounge out between the acts to know if Disraeli or Lord John Russell is up, and whether he may sit out the piece, or must hasten down to Westminster. The Opera House even communicates with the Strand Office, so The function, then, of the Central Office is to receive and redistribute communications. Of the manner in which these ends are accomplished nothing can be gained from a glance round the instrument-rooms. You see no wires coming into or emerging from them; you ask for a solution of the mystery, and one of the clerks leads you to the staircase and opens the door of what looks like a long wooden shoot placed perpendicularly against the wall. This is the great spinal cord of the establishment, consisting of a vast bundle of wires, insulated from each other by gutta percha. One set of these conveys the gathered-up streams of intelligence from the remote ends of the continent and the farthest shores of Britain, conducts them through London by the street lines underneath the thronging footsteps of the multitude, and ascends with its invisible despatches directly to the different instruments. Another set is composed of the wires that descend into the battery-chamber. It is impossible to realize the fact by merely gazing upon this brown and dusty-looking bundle of threads; nevertheless so it is, that they put us in communication with no less than 4,409 miles of telegraph, which is coterminous with the railway system of the island, and forms a complete network over its The physiologist, minutely dissecting the star-fish, shows us its nervous system extending to the tip of each limb, and descants upon the beauty of this arrangement, by which the central mouth is informed of the nutriment within its reach. The telegraphic system, already developed in England, has rendered her as sensitive, to the utmost extremities, as the star-fish. Day by day and hour by hour everything that happens of importance is immediately referred to its centre at Lothbury, and this centre returns the service by spreading the information afresh in every direction. Thus, should an enemy appear off our coast, his presence, by the aid of the fibre, is immediately felt at the Admiralty, and an immediate reply sends out the fleet in chase. Should a riot occur in the manufacturing districts, the local authorities communicate with the Home Office, and orders are sent down to put the distant troops in motion. Does a murderer escape, the same wire makes the fact known to Scotland Yard, and from thence word is sent to the distant policemen to intercept him in his flight. The arm is scarcely uplifted quicker to ward off a sudden blow—the eye does not close with more rapidity upon an unexpected flood of light, than, by the aid of the telegraph, actions follow upon impressions conveyed along the length and breadth of the land. But, says our reader, suppose these wires should be severed or damaged, your whole line is paralyzed; and how are you to find out where the fault may be? Against these eventualities human foresight has provided: by testing from station to station along the line, the office soon knows how far the wires are perfect; and if the breach of continuity should be in the subterranean street wires, there are iron testing-posts at every 500 yards distance, by the aid of which the workman knows where to make his repairs. Whilst all is being made right again, however, a curious contrivance is brought into play, in order to keep the communication open. Every one is acquainted with the action of the railway “switch,” These switches, testing, and battery boxes are of great service in certain conditions of the atmosphere. For instance, a thunderstorm, or more often a fog, will now and then so affect the conducting power of a wire, working through a long distance, that it is found impossible to send a message along it, in which case the clerk “dodges” the passing storm or fog by switching the dispatch round the country through a fine-weather wire. If however the foggy weather should continue, the manipulator has only to go to the battery box and couple on one or more batteries, just as fresh engines are put on a train going up an incline when the rails are “greasy.” By thus increasing the power of the electric current the message is driven through the worst weather. Sometimes as many as six or eight 24-plate batteries are necessary to speed a signal to Glasgow. The more general way in such cases, however, is to transmit the dispatch to some intermediate station, where the message is repeated. Let us now descend into the battery vaults—two long narrow We have followed the wires down to one pole of their Fig. 6 The non-scientific reader will perhaps require a figure to explain to him our meaning, when we say that the earth is capable of completing the “circuit.” In the accompanying diagram (No. 6) we have a battery, U V, in the central office in London, deflecting a needle N, say in Liverpool. The fluid passes from the positive pole of the battery U, traverses the wire of the North-Western Railway, and after working the telegraph in Liverpool, descends into the earth by the wire B, which has a metal or earth-plate attached to it. From this point the electric fluid starts homewards, through the solid ground, and finding out the earth-plate[38] under the foundations Nothing in telegraphy impresses the thoughtful mind more than the fact that the electric fluid, after spanning, maybe, half the globe, should come back to its battery, through adamantine rocks, through seas and all the diverse elements which make up the anatomy of the globe. The explanation of the phenomenon is still a matter of pure speculation. Indeed, it may be objected that our flight of the electric principle is altogether a flight of fancy—that there is in fact no flow of electricity at all, but that its progress through bodies, according to the generally received theory, is owing to opposite poles of contiguous particles acting upon each other. The hypothesis, however, first received in science gives birth to its language, which usually continues the same, although it may have ceased to be an adequate expression of the current doctrine of philosophers. The traveller, as he flies along in the train, and looks out upon the wires which seem stretched against the sky like the ledger lines of music, little dreams of these invisible conductors that are returning the current through the ground. In ninety-nine cases out of a hundred, indeed, the wires and their sustaining posts represent to the spectator the entire telegraph. The following conversation between two navigators, overheard the other day by a friend, gives the most popular view of the way the telegraph works. “I say, Jem, how do ’em jaw along them wires?” “Why, Bill, they pulls at one end, and rings a bell at t’other.” Others again fancy that messages are conveyed Iron wire, coated with zinc, or “galvanised,” as it is termed, to prevent its rusting, is now universally used as the conductor of the electric fluid when the lines are suspended in the air. The first rain falling upon the zinc converts it into an oxide of that metal, which is insoluble in water, so that henceforth in pure air it cannot be acted upon by that element, and all further oxidation ceases. Mr. Highton says, however, that in the neighbourhood of large manufacturing towns the sulphur from the smoky atmosphere converts the oxide into a sulphate of zinc, which is soluble, and consequently the rain continually washes it off the wire. He asserts that he has had wires in this manner reduced from the eighth of an inch to the diameter of a common sewing-needle. There has been a great controversy as to the best means of insulating the wires from their supporting-poles, which would otherwise convey the electricity from the wires to the earth. There is no method known of effecting this completely, but we believe it is now decided that stoneware is the best material for the purpose, both on account of its non-conducting qualities, and the readiness with which it throws off from its surface particles of water. The latter quality is extremely important, for, in very rainy weather, if the insulator should happen to get wet, the electric fluid will sometimes make a bridge of the moisture to quit the wire, run down the post to the earth, and make a short circuit home again to its battery. Indeed, when there are many wires suspended to the same pole on the same plane, a dripping stream of water falling from an upper to a lower one will often suffice to return the current before it has done its work, much to the telegraphist’s annoyance. Not long ago, a mishap, having similar consequences, occurred on the line between Lewes and Newhaven, Notwithstanding that the Electric Telegraph Company has been established so many years, it is only just now that the public have begun to understand the use of the “wire.” The very high charges at first demanded for the transmission of a message, doubtless, made it a luxury rather than a necessary of life; and every reduction of the tariff clearly brought it within the range of a very much larger class of the community, as will be seen by the following table issued by the Company, which shows the advance of the system under its management.
It will be seen from the above what an impulse was given to the business by the reduction in the tariff which took place in December, 1851; for if we compare the messages of the half-year ending June, 1850, with those of the half-year of June, 1852, we shall find that whilst the miles of telegraph in work had not increased one-half, the messages transmitted had nearly trebled. It is only within this last year or two, however—as will be seen by the table—that a very large augmentation of business has taken place, which is doubtless owing to the public being better acquainted with its capabilities. The tariff has since been further reduced, with the result of a still further increase of the messages sent and of the money received—the profits allowing, at the present moment, of a seven per cent. dividend! The lowest point of cheapness, in our opinion, is yet very far from being reached; and it would only be a wise act on the part of the Company to at once adopt an uniform charge for messages, say of fifty words, for one shilling. If this were done, the only limit to its business would be the number of wires they could conveniently hang, for the present set would clearly be insufficient. Means should also be taken to obviate one great objection, at present felt, with respect to sending private communications by telegraph—the violation of all secrecy,—for in any case half a dozen people must be The Company has lately made an arrangement, by which the very absurd and inconvenient necessity of being obliged to attend personally at the telegraph station with a message has been obviated. “Franked message papers,” pre-paid, are now issued, procurable at any stationers’. These, with the message filled in, can be dispatched to the office when and how the sender likes, and the Company intend very quickly to sell electric stamps, like Queen’s heads, which may be stuck on to any piece of paper, and frank its contents without further trouble. Another very important arrangement for mercantile men is the sending of “remittance messages,” by means of which money can be paid in at the central office in London, and, within a few minutes, paid out at Liverpool or Manchester, or by the same means sent up to town with the like dispatch from We have spoken hitherto only of the Old Electric Telegraph Company. There are several other companies in the United Kingdom, working different patents. We have chosen, however, to describe the proceedings of the original Company, because it is the only one that has an amount of business sufficient to give it universal interest; it is the only company, in fact, that has seized the map of England in its nervous grasp, and shot its wires through every broad English shire. The European and the British Telegraph Companies have laid their lines, insulated with gutta percha and protected by iron tubes, beneath the public roads. The European Company works between Manchester, Birmingham, London, and Dover, and, by means of the two submarine cables of Dover and Calais and Dover and Ostend, puts the great manufacturing and commercial emporiums in connection with France, Belgium, and the rest of Europe by a double route. The British Telegraph Company works principally in the northern counties. Of the other lines, we need only mention at present the United Kingdom, and the English and Irish Magnetic Company, which works wires between London, Belfast, and Galway, by means of a subterranean line as far as the west coast of Scotland, and of a submarine cable stretched between Portpatrick and Donaghadee. It will, perhaps, be a source of wonder to our readers that one company should virtually possess the monopoly of telegraphic communication in this country, but this will cease when they consider that this Company was the first to enter the field, that it came forward with a large capital, speedily secured to themselves the different lines of railway—the only paths it was then considered that telegraphs could traverse 1. The plan of bringing the wires under the public roads turns, as it were, the flank of the railroad lines. 2. The patents of the old company are year by year expiring. 3. The very large capital expended by it—upwards of 170,000l. being sunk in patent rights alone,—independently of the vast expense attaching to the first introduction of the invention, forms a dead-weight which no new company would have to bear. In the ordinary course of events, then, the other lines at present in existence will gain strength; new companies will spring up, and the supply of a great public want will be thrown into the arena of competition. Would it not be wise for the legislature to consider the question of telegraphy in England before it is too late? We all know what the principle of reckless competition led us into in our railway system. For years opposing companies scrambled for the monopoly of certain districts, and the result was the intersection of the country with bad lines, and, in many cases, with useless double routes. Millions were spent in litigation; railway travelling became, as a natural consequence, dear; the property of the original shareholders rapidly deteriorated; and it has all ended in half a dozen powerful companies swallowing up the smaller ones; and that competition, in whose name so much was demanded, has turned out to be only “a delusion and a snare.” The conveyance of intelligence cannot safely and conveniently be left in the hands of even one company without a strict Government supervision; much less can half a dozen systems be allowed to distract the land at their own will. Indeed, the question might with propriety be asked, Is not telegraphic communication as much a function of Government as the conveyance of Having done so much towards completing our telegraphic organization at home, our engineers adventurously determined to carry the wires across to the continent, and thus destroy the last remnant of that isolation to which we were forced to submit on account of our insular position. As long back as the year 1840 we find, by the Minutes of Evidence in the Fifth Report upon Railways, wherein the subject of electric telegraphy was partially examined, that, whilst Mr. Wheatstone was under examination Sir John Guest asked, “Have you tried to pass the line through water?” to which he replied, “There would be no difficulty in doing so; but the experiment has not yet been tried.” Again, on the chairman, Lord Seymour, asking, “Could you communicate from Dover to Calais in that way?” he replied, “I think it perfectly practicable.” A couple of years later the professor, indeed, engaged, and had everything in readiness, to lay a line for the Government across Portsmouth Harbour; it was not executed, however, through circumstances over which he had no control, but which were quite irrespective of the perfect feasibility of the undertaking. The first submarine wire laid down was that between Dover and Cape Gris-nez, in the vicinity of Calais, belonging to the Submarine Telegraph Company. This wire, thirty miles in length, was covered with gutta percha to the diameter of half an inch, and sunk (August, 1850), as it was paid out, by the addition of clumps of lead at every sixteenth of a mile. The whole was completed and a message sent between the two countries on the same day. In the course of a month, however, the cable broke, owing to its having fretted upon a sharp ridge of rocks about a mile from Cape Gris-nez. It was now determined to make a stronger and better-constructed cable, capable of resisting all friction in this part of the Channel. The form of cable adopted for this and all other submarine telegraphs now in existence seems to have been originally suggested by Messrs. Newall and Co., of Gateshead, the wellknown wire-rope manufacturers. Instead of one, four wires, insulated by the Gutta Percha Company, were twisted together into a strand, and next “served” or enveloped in spun-yarn. This core was then covered with ten iron galvanized wires five-sixteenths of an inch in diameter, welded into lengths of twenty-four miles, and forming a flexible kind of mail. The cable was manufactured in the short space of twenty-one days. It weighed 180 tons, and formed a coil in the hold of the old hulk that carried it of Fig. 7 When the cable at length came near the French coast, it was found to be, in consequence of this unintentional detour, at least half a mile too short. This was remedied, however, by splicing on a fresh piece; and, on securing it at Saugat, the new place of landing, fixed upon on account of its sandy shore, it was found that the communication was good, and good it has remained ever since—a proof of the admirable manner in which the wires were insulated and the cable constructed. The placing of this successful cable was superintended by Mr. Wollaston, the Company’s engineer, and by Mr. Crampton, the contractor. Mr. Wollaston, who is a nephew of the illustrious philosopher of the same name, and who also presided over the earlier attempt, will accordingly, in the annals of electricity, carry off the honours of having first laid down the ocean telegraph. The notion, however, of preventing competition proved to be vain. A third cable was laid on the 30th May, 1853, between the English coast at Orfordness, near Ipswich, and the port of Schevening in Holland, and thence to the Hague. This cable is the longest at present in connection with this isle, extending 120 miles under the turbulent North Sea. It was, however, paid out during a violent gale of wind without the slightest accident, and affords the most direct means of communication with the north of Europe, and entirely commands the commercial traffic of the cities of Amsterdam and Rotterdam. The Hague cable (or cables, for there are now many, consisting of a single wire conductor each, running side by side) is the property of the International Company, a branch of the Old Electric Telegraph, and its wires go direct to the Lothbury office. Whilst England has moored her south-eastern shores to the continent by three cables, and put herself en rapport with all its principal cities, her north-western extremity has been secured, after many failures, to the sister kingdom—the Electro-Magnetic Company having laid a submarine wire from Portpatrick and Donaghadee, in the neighbourhood of Belfast, and the British Electric Telegraph Company another between Portpatrick and Will it be believed that in 1841, long after the electric telegraph was working in England, scientific men were seriously discussing in the French Chamber the propriety of establishing a night telegraph on the visual principle, and that when at length it was determined to call in the aid of electricity, instruments were ordered to be so constructed that signals could be given after the fashion of the old semaphore, in order that the officials might be spared the trouble of leaving their ancient ruts? The needles were accordingly displaced for a mimic post, to which moveable arms were attached and signs were transmitted by elevating or depressing them by electricity, instead of by hand. Of course this absurd system was after a while abolished, and the instrument now made use of is a modification of the dial telegraph constructed by Breguet. The first telegraph planted in France was constructed by Mr. Wheatstone, from Paris to Versailles, in 1842. The principal line is that running from Calais vi Paris to Marseilles, which puts the English Channel and the Mediterranean in communication, and transmits for us the more urgent items of the India and China mail. Belgium and Switzerland are perhaps the best supplied of all the continental kingdoms with telegraphic communication. The Belgian lines were excellently planned and cheaply constructed, consequently their tariff is comparatively low, the average charge for a message being 3 francs 48 centimes, or about 2s. 10½d. Of the nature of the messages sent we can form a very good idea by the following classification of a hundred dispatches:—
In Prussia the lines are insulated in gutta percha, and buried in the ground in leaden tubes, a very costly process, but with many great advantages, in freedom from injury and atmospheric influences, over the more usual method of suspending them in the air on poles. Upwards of 4,000 miles of wire have already been laid down in this kingdom. Although Austria only commenced operations in 1847, she already possesses 4,000 miles Whatever injury the Eastern war might have inflicted upon the world, it at least infused fresh vigour into the telegraphic system, as, independently of the lines planned to put Constantinople in communication with the Danubian frontier, Russia has been stimulated to complete a line between St. Petersburg and Helsingfors, in the Baltic, and a continuation of the line already extending from the capital to Moscow, down to Bucharest, Odessa, and Sebastopol. One feature distinguishes the management of continental telegraphs over those of England and America: they are all, with the exception of the short line between Hamburg and Cuxhaven, possessed and worked by the different governments, who seem afraid of the use they might be put to for political purposes, and accordingly exercise a strict surveillance over all messages sent, and rigidly interdict the use of a cipher.[39] The Anglo-Saxon race, however, has far surpassed any other in the energy with which it has woven the globe with telegraphic wires. The Americans in the West and the British in the East alike emulate each other in the magnitude of their undertakings of this nature. The United States, although she came into the field long after England—her first line from Washington to Baltimore not having been completed until 1844—has far outstripped the mother country in the length of her lines, which already extend over 16,729 miles. Every portion of the Union, with the exception of California and the upper portion of the Mississippi, is covered with a network of wire. New York and New Orleans communicate with each other by a double route—one skirting the seacoast, the other taking an inland direction by Cincinnati. These lines alone, following the sinuosities of their routes, are upwards of 2,000 miles in length. This we suspect is the project of Mr. O’Reilly, the engineer who has already executed the boldest lines in America. In constructing such a line, man, not nature, is the great obstacle to be encountered. The implacable Indians inhabiting this portion of the States certainly would not pay any respect to the telegraphic wire; on the contrary, they would in all likelihood take it to bind on the heads of their scalping tomahawks. To provide against this contingency, it is proposed to station parties of twenty dragoons at stockades twenty miles apart, along the whole unprotected portion of the route; two or three of these soldiers are also to ride from post to post and carry a daily express letter across the continent. When this project is executed, it is asserted that “European news may be published in six days on the American shores of the Pacific, on the shortened route between the old and new world.” “The shortened route,” it should be mentioned, lies between Cape Race, in Newfoundland, and Galway, in Ireland, a passage calculated to take, on the average, only five days. It may be asked how is it that such lengths of wire, carried through thinly settled parts of the country, and sometimes through howling wildernesses, can pay? The only manner that we can account for it is the cheapness with which the telegraph is built in America, the average price being 150 dollars, or about 31l. a mile—less than a fourth part of the cost at which the early lines of the English Electric Telegraph Company were erected. Again, the low prices charged for the transmission of messages produce an amount of business which “FromTo “I will meet you at Birmingham to-morrow, 3 P.M. Don’t fail me.” Now, the London charge for the above, if forwarded to Liverpool, would be 2s. 6d.; but the American tariff for the same, on the Louisville and Pittsburgh rail, would be only one cent a word, or sixpence halfpenny English. On very long distances our friends on the other side of the steam ferry have a still greater advantage over us: for instance, a message of ten words can be sent on O’Reilly’s line, from New York to New Orleans, a distance of 2,000 miles, for sixty cents, or two and sixpence—not half the sum it would cost to send the same message from London to Edinburgh, about 500 miles. We give, as a curiosity, the scale of prices on this line:[40]—
These charges, it is true, are unusually low; but if they will pay one Company, why should they not another? There are as many as twenty Telegraph Companies in America, and consequently there is great competition, three or four competing lines in many cases running between the same towns. Great confusion has arisen from this competition, as we have before stated; but it cannot be doubted that prices have materially fallen in consequence. It is common to send a message 1,000 miles in the United States without its being read and repeated “A central office or station is fixed upon, at which the main battery, with other instruments, is placed. From this two circuit-wires proceed, like those of the common telegraph wires, fastened to housetops or ingeniously insulated supports. One of the wires communicates from the main fire bell-tower to all the others, and connects each with machinery, which puts in motion the largest-sized hammer, and causes it to strike a large fire-bell the desired number of blows; the other wire proceeds on a still more circuitous route, and from one local street or ward signal-station to another. Each station is provided with a strong box and hinged door and lock. Inside of this box there is a connecting electro-magnet and connecting lever, an axle with a number of pins in it to correspond to the number of the station. The axle is turned by a short crank, and in its revolutions the pins break and close the circuit, by moving the end of the lever as often as there are pins or cogs, the result of which is communicated Canada has also sketched out a plan of telegraphs, which every year will see filled up. Already she has lines connecting all her principal towns, and extending over nearly two thousand miles of country, all of which lock in with the American system. In India, Dr. O’Shaughnessy has for some time been engaged in carrying out a telegraphic system proposed by Lord Dalhousie, and approved by the East India Company, which has already put all the important towns of the peninsula in communication with the seat of government and with each other. The fine No. 8 galvanized iron wire, which in Europe runs along from pole to pole, like a delicate harp-string, is discarded in this country for rods of iron three-eighths of an inch in thickness. The nature of the climate, and the character of its animal life, has caused this departure from the far more economical European plan. Clouds of kites and troops of monkeys would speedily take such liberties with the fine wires as to place them hors-de-combat. Again, the deluges of rain which occur in the wet season would render the insulation of a small wire so imperfect that a message could not be sent through it to any distance. The larger mass of metal, on the contrary, is capable of affording passage for the electric fluid through any amount of rain, without danger of “leakage;” and as for the kites and other large birds of the country, they may perch on these rods by thousands without stopping the messages, which will fly harmlessly through their claws; and the weight of the heaviest monkey is not sufficient to injure them. These rods are planted, without any insulation, upon the tops of bamboo poles (coated with tar and pitch), at such a height that loaded elephants can pass beneath without displacing them; and even if by chance they should be thrown down, bullock-carts or buffaloes and elephants may trample them under foot without doing them injury. In The restless spirit of English engineers, having provided for the internal telegraphic communication of Great Britain and her principal dependencies, seems bent upon stretching out her lines to the East and to the West, so as ultimately to clasp the entire globe. The project of connecting, telegraphically, England with America is at the present moment seriously engaging the attention of scientific and commercial men. The more daring engineers are still sanguine of the practicability of laying a submarine cable directly across the Atlantic, from Galway to Cape Race in Newfoundland. Now that we have Lieutenant Maury’s authentic determination of the existence of a shelf across the North Atlantic, the soundings on which are nowhere more than 1,500 fathoms, the feasibility of the project is tolerably certain. The principal question is, whether if a line were laid an electric current can be worked to commercial advantage through 3,000 miles of cable. No doubt, by the expenditure of enormous battery power, this might be accomplished through wires suspended in the air, but it is a question whether it can be done along a vast length of gutta-percha coated wire, passing through salt-water. There is such a thing as too great an insulation. Professor Faraday has shown that in such circumstances the wire becomes a Leyden jar, and may be so charged with electricity that a current cannot, without the greatest difficulty, move through it. This is the objection to a direct cable between the two continents: if, however, it can be overcome, doubtless the ocean path would in all possible cases be adopted where Whilst England would thus grasp the West with one hand, her active children have plotted the seizure of the East with the other. A cable runs from Genoa to Corsica, and from thence to Sardinia. From the southernmost point of the latter island, Cape Spartivento, to the gulf of Tunis, another cable can easily be carried. The direction thence (after giving off a coast branch to Algeria) will be along the African shore, by Tripoli to Alexandria, and eventually across Arabia, along the coasts of Persia and Beloochistan until it enters Scinde, and finally joins the wire at Hydrabad, which in all |