Various

Advertisements

Inside Page, each insertion 75 cents a line.
Back Page, each insertion $1.00 a line.

(About eight words to a line.)

Engravings may head advertisements at the same rate per line, by measurement, as the letter press. Advertisements must be received at publication office as early as Thursday morning to appear in next issue.

THE GEOLOGICAL ANTIQUITY OF Flowers and Insects. By J. E. Taylor, F.G.S. A plain, comprehensive review of the subject, bringing forward many instructive facts; with six illustrations. The invariable correlation between insects and flowers. How they are fossilized. Fossil botany. Geological Evidences of Evolution. Correspondence in the succession of Animal and Vegetable life. Flowers necessary to Insects, and Insects necessary to Flowers. Insects and Plants in the Devonian, the Switzerland Lias, the English Stonesfield Slate, the Tertiary Strata, the Coal Measures, a Greenland, and other formations. A Peculiar Aspect of Evolution. Contained in Scientific American Supplement No. 120. Price 10 cents. To be had at this office and of all newsdealers.

THE PHONOGRAPH AND ITS FUTURE. By Thomas A. Edison. The instrument and its Action. Durability, Duplication, and Postal Transmission of Phonograph Plates. The probable great utility of the Phonograph in Letter-writing, Business Correspondence and Dictation; Literature; Education; Law; Music; Oratory, etc. Application to Musical Boxes, Toys, and Clocks. Telegraphy of the Future; the Phonograph and Telephone combined. Being a most interesting and valuable paper by the author and inventor of the Phonograph himself. Contained in Scientific American Supplement, No. 124. Price 10 cents. To be had at this office and of all newsdealers.

THE

The Most Popular Scientific Paper in the World.

THIRTY-THIRD YEAR.

Only $3.20 a Year including Postage. Weekly.
52 Numbers a Year.

This widely circulated and splendidly illustrated paper is published weekly. Every number contains sixteen pages of useful information, and a large number of original engravings of new inventions and discoveries, representing Engineering Works, Steam Machinery, New Inventions, Novelties in Mechanics, Manufactures, Chemistry, Electricity, Telegraphy, Photography, Architecture, Agriculture, Horticulture, Natural History, etc.

All Classes of Readers find in The Scientific American a popular resume of the best scientific information of the day; and it is the aim of the publishers to present it in an attractive form, avoiding as much as possible abstruse terms. To every intelligent mind, this journal affords a constant supply of instructive reading. It is promotive of knowledge and progress in every community where it circulates.

Terms of Subscription.—One copy of The Scientific American will be sent for one year—52 numbers—postage prepaid, to any subscriber in the United States or Canada, on receipt of three dollars and twenty cents by the publishers; six months, $1.60; three months, $1.00.

Clubs.—One extra copy of The Scientific American will be supplied gratis for every club of five subscribers at $3.20 each; additional copies at same proportionate rate. Postage prepaid.

One copy of The Scientific American and one copy of The Scientific American Supplement will be sent for one year, postage prepaid, to any subscriber in the United States or Canada, on receipt of seven dollars by the publishers.

The safest way to remit is by Postal Order, Draft, or Express. Money carefully placed inside of envelopes, securely sealed, and correctly addressed, seldom goes astray, but is at the sender's risk. Address all letters and make all orders, drafts, etc., payable to

MUNN & CO.,
37 Park Row, New York.

To Foreign Subscribers.—Under the facilities of the Postal Union, the Scientific American is now sent by post direct from New York, with regularity, to subscribers in Great Britain, India, Australia, and all other British colonies; to France, Austria, Belgium, Germany, Russia, and all other European States; Japan, Brazil, Mexico, and all States of Central and South America. Terms, when sent to foreign countries, Canada excepted, $4, gold, for Scientific American, 1 year; $9, gold, for both Scientific American and Supplement for 1 year. This includes postage, which we pay. Remit by postal order or draft to order of Munn & Co., 37 Park Row, New York.

WALTHAM WATCHES.

Improved in Quality, but no higher in price.

After this date, we shall sell none but New Model Waltham Watches, particulars of which will be found in our New Price List.

Every one concedes that genuine Waltham watches are superior to all others, and at present prices they are within the reach of all.

We continue to send single watches by mail or express to any part of the country, no matter how remote, without any risk to the purchaser.

Price List sent free and postpaid.

Address HOWARD & CO.,

All silver cases for the New Model Watches are made of sterling silver, and cases as well as movements are guaranteed by special certificate.

The Midsummer Holiday Scribner.

ANOTHER ROYAL NUMBER.

Charming Writers—New Artists—Superb Engraving.

The August number of this progressive magazine is the third "Midsummer Holiday" issue, and the publisher is confident that in literary and artistic excellence it will be found fully equal to, if not in advance of, its predecessors, which met with such distinguished favor from the press and the public.

It opens with a Frontispiece,

A NEW PORTRAIT OF BRYANT,

Drawn in crayon, from life, by Wyatt Eaton, and engraved by Cole, with a sketch of the haunts and homes of Bryant, by Horatio N. Powers, with numerous wood-cuts.

Among the other illustrated material is

"A SEA-PORT ON THE PACIFIC,"

By Mary Hallock Foote. The drawings are also by Mrs. Foote, and are engraved by Marsh, Cole, and others. They have not been excelled in magazine literature for charm, picturesqueness, and fine engraving. A paper of wide interest is

"TO SOUTH AFRICA for DIAMONDS!"

By Dr. W. J. Morton, a narrative of personal experience in the mines, with striking illustrations of this romantic and curious life. There are also

TWO CHARMING FIELD PAPERS:

"Sharp Eyes" by John Burroughs, with illustrations by a new artist; "Glimpses of New England Farm Life," by R. E. Robinson, a paper of rare picturesque interest.

There are illustrated poems by Dr. Holland and J. T. Trowbridge; also, poems by Stedman, Bret Harte, and others.

The Illustrations are by Wyatt Eaton, Mary Hallock Foote, Vanderhoof, Waud, Frederick Dielman, R. Swain Gifford, Jervis McEntee, Henry Farrer, Winslow Homer, J. E. Kelly, Walter Shirlaw, L. C. Tiffany, Thomas Moran, Will H. Low, Mrs. Fanny Eliot Gifford, and others.

The shorter stories are by Stockton and Henry James, Jr.

Dr. Eggleston's Story of Western Life reaches its climax, and will end in October.

A New Novel,

"FALCONBERG," by BOYESEN,

Begins in this issue. It is a story of immigrant life in America, told by one of the most promising of the younger generation of novelists, and will be read with interest abroad as well as at home.

The Editorial Departments include "Our Commune," "The Death of Bryant," "Greatness in Art," "A Rural Art Association," "Recent Improvements in Telephony," thoughtful and suggestive Book Reviews, Humorous Sketches and Verses by new hands, &c., &c.

The frontispiece is upon a peculiar tint of paper, manufactured by Warren expressly for Eaton's portrait of Bryant. The printing is by De Vinne, from the press of Francis Hart & Co., who take rank among the foremost printers of the world.

Edition 85,000. Price 35 cents Sold by all News-dealers and Book-sellers.

Baker Rotary Pressure Blower.

(FORCED BLAST.)

Warranted superior to any other.

WILBRAHAM BROS.
2318 Frankford Ave.

OUTWARD MARKS OF A GOOD COW.

By Capt. John C. Morris, Pa. Carelessness in Breeding. How to Select for Breeding. Marks of the Handsome Cow. Care and Training of the Heifer. Infallible Marks of Good Milkers. Distinguishing Marks and Characteristics of the "Bastard" and the "Bogus" Cow, etc. Contained, with useful Remarks on Bee Culture, in Scientific American Supplement No. 135. Price 10 cents. To be had at this office and of all newsdealers.

PATENTS AT
AUCTION.

Regular Monthly Sales the first week of each month by George W. Keeler, Auctioneer, at his salesrooms, 53 and 55 Liberty Street, N. Y. For terms, etc., address The New York Patent Exchange, 53 Liberty St., N. Y.

SPARE THE CROTON AND SAVE THE COST.

Driven or Tube Wells

furnished to large consumers of Croton and Ridgewood Water. WM. D. ANDREWS & BRO., 414 Water St., N. Y., who control the patent for Green's American Driven Well

JAPANESE ART MANUFACTURES.

By Christopher Dresser, Ph.D., etc. Paper read before Society of Arts. The Japanese Potter at Work. Curious mode of Making Scarfs. How the Japanese Print on Cloth. Japanese Process for Silk Ornamentation. Japanese Weaving. How Fine Japanese Fans are made. Japanese Method of Making Moulds for Ornamental Castings for Vessels, Bronzes, etc. Japanese Lacquer Manufacture. Curious Method of Decorating Lacquer Work. The Love and Pursuit of the Beautiful in Japan. A very entertaining, instructive, and comprehensive paper. Contained in Scientific American Supplement No. 115. Price 10 cents. To be had at this office and of all newsdealers.

Relieved and cured, without the injury trusses inflict, by Dr. J. A. Sherman's method of support and curative externally applied. Office, 251 Broadway, N. Y. His book, with photographic likenesses of bad cases before and after cure, mailed for 10 cents. Beware of imitators.

ARTIFICIAL LIGHT.

We have just introduced this important facility, which enables us to prosecute our work in cloudy weather, and to push through hurried orders in the night.

RELIEF PLATES

For Newspaper, Book, and Catalogue Illustrations. Engraved in Type-Metal, by a new Photo-Chemical Method, from all kinds of Prints, Pen Drawings, Original Designs, Photographs, etc., much cheaper than wood cuts. These plates have a perfectly smooth printing surface, and the lines are as deep, as even, and as sharp as they could possibly be cut by hand. We guarantee that they will print satisfactorily, on wet or dry paper, and on any press where type or wood cuts can be so printed. Electrotypes may be made from them in the usual way.

Our plates are now used by the principal publishers and manufacturers in every State in the Union.

State, County and Shop Rights For Sale.

The Patent Adjustable Die Co. invite the attention of Printers, Lithographers, Paper Box Makers, Leather, Cloth, and Metal Workers, and all who use dies of any description, or who cut by laborious hand work patterns of any size or shape, to their patent device for cutting any desired outline at a cost of a few cents, and doing it with exactness, cutting from one to three hundred at a single pressure. Among those who have purchased shop rights, the following are referred to: Rand, Macnally & Co.; Donnelly, Loyd & Co.; Shoeber & Carqueville Lithograph Co.; Wright & Leonard; Frank Roehr; Gregory & Staiger; Western Label Man. Co.; S. A. Grant & Co., Cincinnati.

BARNES' FOOT POWER MACHINERY.

Different machines with which Builders, Cabinet Makers, Wagon Makers, and Jobbers in miscellaneous work can compete as to Quality and Price with steam power manufacturing; also Amateurs' supplies. Machines sent on trial.

Say where you read this, and send for catalogue and prices.

W. F. & JOHN BARNES,
Rockford, Winnebago Co., Ill.

Eastern Agency for

Barnes' Foot Power Machinery.

Full line in stock at factory prices. Can be seen in operation at CHAS. E. LITTLE'S, 59 Fulton St., N. Y. Cast Steel Pump Log Augers and Reamers a specialty.

HEALD, SISCO & CO.'S "RELIABLE" 20 Horse Power, Stationary, Horizontal, Double-crank Steam Engine. Complete with Judson Governor, Boiler-feed Pump, Water Heater, etc. Best and cheapest in the world, and fully guaranteed. Two Hundred and Fifty Dollars. Send for circular to

Wood-Working Machinery,

Such as Woodworth Planing, Tonguing, and Grooving Machines, Daniel's Planers, Richardson's Patent Improved Tenon Machines, Mortising, Moulding, and Re-Saw Machines, and Wood-Working Machinery generally. Manufactured by

(Shop formerly occupied by R. BALL & CO.)

PATENT MINERAL WOOL.

Entirely Fireproof, undecaying, and the best non-conductor of heat, cold, or sound. Cheaper than hair-felt.

A. D. ELBERS,

THE UNION IRON MILLS, Pittsburgh, Pa., Manufacturers of improved wrought iron Beams and Girders (patented).

The great fall which has taken place in the prices of Iron, and especially in Beams used in the construction of FIRE PROOF BUILDINGS, induces us to call the special attention of Engineers, Architects, and Builders to the undoubted advantages of now erecting Fire Proof structures; and by reference to pages 52 & 54 of our Book of Sections—which will be sent on application to those contemplating the erection of fire proof buildings—THE COST CAN BE ACCURATELY CALCULATED, the cost of Insurance avoided, and the serious losses and interruption to business caused by fire; these and like considerations fully justify any additional first cost. It is believed, that, were owners fully aware of the small difference which now exists between the use of Wood and Iron, in many cases the latter would be adopted. We shall be pleased to furnish estimates for all the Beams complete, for any specific structure, so that the difference in cost may at once be ascertained. Address

Pond's Tools,

Engine Lathes, Planers, Drills, &c.

Send for Catalogue. DAVID W. POND, Successor to LUCIUS W. POND. Worcester, Mass.

GOLD PLATED WATCHES. Cheapest in the known world. Sample Watch Free to Agents. Address, A. Coulter & Co., Chicago.

EAGLE FOOT LATHES,

Improvement in style. Reduction in prices April 20th. Small Engine Lathes, Slide Rests, Tools, etc. Also Scroll and Circular Saw Attachments, Hand Planers, etc. Send for Catalogue of outfits for Amateurs or Artisans.

WM. L. CHASE & CO.,
95 & 97 Liberty St., New York.

The George Place Machinery Agency
Machinery of Every Description.
121 Chambers and 103 Reade Streets, New York.

CIVIL and MECHANICAL ENGINEERING

At the Rensselaer Polytechnic Institute, Troy, N. Y. Next term begins Sept. 12. The Annual Register for 1878 contains a list of the graduates for the past 52 years, with their positions; also, course of study, requirements for admission, expenses, etc. Address Wm. H. Young, Treas'r.

THE DRIVEN WELL.

Town and County privileges for making Driven Wells and selling Licenses under the established American Driven Well Patent, leased by the year to responsible parties, by

NOW READY.

The Army of the Republic:

ITS SERVICES AND DESTINY.

BY HENRY WARD BEECHER.

An Oration at the Re-union of the Army of the Potomac, at Springfield, Mass., June 5th, comprising Christian Union Extra No. 12.

Lathes, Planers, Shapers

Drills, Bolt and Gear Cutters, Milling Machines. Special Machinery. E. GOULD & EBERHARDT, Newark, N. J.

ABLOCK PLANE, WITH ADJUSTMENT FOR SETTING THE CUTTER.

Length, 7½ inches; 1¾ inch Cutter.

PRICE $1.00.

Sent by mail, to any address, postage prepaid, on receipt of price.

Price of the above Plane without the adjustment, 70c. Write for an Illustrated Descriptive Circular and Price List of our full line of "Defiance" Metallic Planes to

READ THIS! READ THIS!!

Adjustable Safety Stilts.

A NOVELTY FOR THE BOYS.

A Great Chance to Make Money.

Parties wishing to invest in a paying business can do so with a small capital by addressing

CHAS. S. SHUTE, Springfield, Mass.

VINEGAR.

I teach by letter the new English Quick-Vinegar-Process, that is, how vinegar is made in one day without drugs. For particulars and terms, address

Foundry and Machine Shop,

in live Western town, for sale cheap. Address Box 275, Winona, Minn.

SHEET METAL WORKS FOR SALE.

The largest and best equipped establishment in the United States for the manufacture of Sheet Metal Architectural and Cornice Works, and Ornamental Stamped and Spun Zinc Work. Located at an important station on the Pittsburgh, Fort Wayne and Chicago Railroad. Taxes and rents low. The ornamental sheet metal work upon the Main Building for the Centennial Exposition was made at these shops. The real estate, tools, and equipments cost some sixty thousand dollars. Will be sold at a very great sacrifice. Call on or address LUCIEN L. GILBERT, Salem, Columbiana Co., Ohio.

THE BEST FRICTION CLUTCH IN THE World for hoisting coal, logs, or freight. It can be fitted direct on line shaft, run at high speed, and start without shock. No end thrust on journals. Patent Safety Elevators at low prices.

TELEPHONES

For Business Purposes, ours excel all others in clearness and volume of tone. Illus. circular and testimonials for 3 cts.

Address J. R. HOLCOMB, Mallet Creek, Ohio.

EXPLOSIVE DUST. A comprehensive description of the Dangers from Dust in various Manufactures and the Cause of many Fires. How combustible substances can explode. Spontaneous Combustion of Iron, Charcoal, and Lampblack in Air. Flour Dust and Brewery Dust Explosions. Explosions of Coal Dust in Mines. Contained in Scientific American Supplement No. 125. Price 10 cents. To be had at this office and of all newsdealers.

Can I Obtain a Patent?

This is the first inquiry that naturally occurs to every author or discoverer of a new idea or improvement. The quickest and best way to obtain a satisfactory answer, without expense, is to write to us (Munn & Co.), describing the invention, with a small sketch. All we need is to get the idea. Do not use pale ink. Be brief. Send stamps for postage. We will immediately answer and inform you whether or not your improvement is probably patentable; and if so, give you the necessary instructions for further procedure. Our long experience enables us to decide quickly. For this advice we make no charge. All persons who desire to consult us in regard to obtaining patents are cordially invited to do so. We shall be happy to see them in person at our office, or to advise them by letter. In all cases, they may expect from us a careful consideration of their plans, an honest opinion, and a prompt reply.

What Security Have I that my communication to Munn & Co. will be faithfully guarded and remain confidential?

Answer.-You have none except our well-known integrity in this respect, based upon a most extensive practice of thirty years' standing. Our clients are numbered by hundreds of thousands. They are to be found in every town and city in the Union. Please to make inquiry about us. Such a thing as the betrayal of a client's interests, when committed to our professional care, never has occurred, and is not likely to occur. All business and communications intrusted to us are kept secret and confidential.

Address MUNN & CO.,
Publishers of the Scientific American,
37 Park Row New York.