Blumenbach has given us a most ingenious definition of this wonderful function. The voice, properly speaking, is a sound formed by means of expiration in the larynx, which is a most beautifully constructed organ, fixed upon the top of the windpipe, like a capital upon a column. It is composed of various cartilages, united in the form of a little box, and supplied with numerous muscles, that, moving altogether or separately, produce the variations of sound.

The part of the larynx most concerned in producing the voice is the glottis, or narrow opening of the windpipe, having the epiglottis suspended over it like a valve. The air expired from the lungs strikes upon the glottis, and thus becomes sonorous. The change that the glottis undergoes in the modulation of the voice has been matter of much controversy. Aristotle and Galen compared the glottis to a wind instrument; Ferrein assimilated it to a chorded one. This latter hypothesis was objected to, on the principle that a chord, to vibrate, should not only be in a state of tension, but dryness; characters which this organ does not possess, being constantly lubrified with mucus, and in a state of greater or lesser relaxation. Fulgentius considers the human voice to be composed of ten parts: the four first are the front teeth, so useful for the appulse of the tongue in forming sounds, without which a whistle would be produced instead of a voice; the fifth and sixth are the lips, which he compares to cymbals striking against each other; the seventh the tongue, which serves as a plectrum to articulate sounds; the eighth is the palate, the concavity of which forms the belly of the instrument; the ninth the throat, which performs the part of a flute; and the tenth the lungs, which supply the place of bellows.

That every degree of action in the glottis is due to the muscles of the larynx is proved by the experiment of tying or dividing the recurrent nerves, when the voice is destroyed or weakened.

Speech is a peculiar modification of the voice adjusted to the formation of the sounds of letters, by the expiration of the air through the nostrils and mouth, and in a great measure by the assistance of the tongue applied and struck against the neighbouring parts, the palate and front teeth in particular, and by the diversified action of the lips. This is Payne Knight’s doctrine, in his analytical essay on the Greek alphabet, and an illustration of the notions of Fulgentius.

Singing is compounded of speech and a musical modulation of the voice, a prerogative peculiar to man even in his most savage state; for, despite the assertions of the visionary Rousseau, who maintained that it is not natural to our species, we find that even in the uncivilized regions of Ethiopia, Greenland, and Kamtschatka, singing is a solace and a comfort.

The mechanism of speech and articulation is so intricate, that even the division of letters and their distribution are attended with difficulties. The following is the division of Amman in his work Surdus Loquens, published at Amsterdam in 1629, and enlarged under the title of Dissert. de Loquela, 1700, and is, perhaps, the most natural and intelligible.

He divides into, I. Vowels; II. Semi-vowels; III. Consonants.

I. The vowels are simple, a, e, i, o, u; and mixed Ä, Ö, Ü: these are formed by the voice only. The semi-vowels and consonants are articulated by the mechanism of speech.

II. The semi-vowels are nasal, m, n, ng (n before g, which is nearly related to it), that is, the labio-nasal m, the dente-nasal n, and the gutture-nasal ng; or oral (lingual), r, l, that is, r with a vibration of the tongue, or l with the tongue less moved.

III. The consonants he distinguishes into sibilant (pronounced in succession), h, g, ch, s, sh, f, v, ph, that is h, formed in the throat, as it were a mere aspiration; g and ch, true consonants; s, sh, produced between the teeth; and f, v, ph—formed by the application of the lower lip to the upper front teeth—and explosive (which are as it were suddenly exploded by an expiration for a time suppressed, or interrupted), namely k, q, formed in the throat; d, t, about the teeth; p, b, near the lips; and double (compound), x, z.[3]

It has been thought that the tongue was indispensable for the purposes of speech, yet there are instances on record in which this has not been found an invariable rule. Dr. Conyers Middleton mentions two cases of distinct articulation with at least little or no tongue. In his exposure of the pious deceptions of weak and wicked Christians during the first centuries of the Christian era, he notices a pretty tale of an Arian prince cutting out the tongues of some of the orthodox party, and these being as able to talk as before; nay, one of them, who had been dumb from his birth, gained the faculty of speech by losing his tongue! We find various accounts of persons who spoke more or less fluently without this organ. Jussieu has inserted in the MÉmoires de l’AcadÉmie des Sciences, 1718, the case of a Portuguese girl, who instead of a tongue had merely a little protuberance of about four lines in diameter in the middle of her mouth, and endowed with the power of contraction and dilatation; she spoke distinctly, but experienced difficulty in pronouncing c, f, g, l, n, r, s, t, x, and z, when she was obliged to bend her neck forward to upraise as it were the larynx. In this case, deglutition could not be well performed, and she was obliged to use her finger to propel the masticated food downwards.

Dr. Eliotson observes, that it is by no means improbable that the progress of modern art may present us at some future period with mechanical substitutes for orators and preachers; for, putting aside the magic heads of Albertus Magnus and Roger Bacon, Kratzenstein actually constructed an instrument to produce the vowels. De Kempelin has published a full account of his celebrated speaking machine, which perfectly imitated the human voice. The French celebrated mechanician, the AbbÉ Mical, also made two heads of brass, which pronounced very distinctly entire phrases; these heads were colossal, and their voices powerful and sonorous. The French government refusing, it is said, in 1782, to purchase these automata, the unfortunate and too sensitive inventor, in a paroxysm of despair, destroyed these masterpieces of scientific ingenuity.

It has been observed, that in various races the pronunciation seemed to depend upon some peculiar and characteristic conformation; and Adelung informs us that in the Hottentots, the bony palate is smaller, shorter, and less arched than in the other races, and that the tongue, especially in the Bosjesman tribe, is rounder, thicker, and shorter. Hence their pronunciation is singular, and has been compared to the clucking of the Turkey, or the harsh and broken noises produced by some other birds. They combine their aspirated gutturals with hard consonants, without any intervening vowels, in a manner that Europeans cannot imitate.

No doubt the differences of language are as numerous as the other distinctions which characterize the several races of men. The various degrees of natural capacity and of intellectual progress; the prevalence of particular faculties; the nature of surrounding circumstances; the ease or difficulty with which our different wants and desires are gratified, will produce not only peculiar characters in the nature and construction of language, but in its copiousness and development.

One of the most curious points in the subject of language, is the continued existence in a large portion of Asia, very anciently civilized, and considerably advanced, at least in the useful arts, of simple monosyllabic languages, which are not in the slightest degree connected with the peculiar organization of the Mongolian variety, to which these people belong, and whose language is distinctly polysyllabic.

The attempts that have been made to trace the origin of languages to the varieties of our species, or to the influence of climate, have hitherto been fruitless, and the doctrines broached on the obscure subject refuted by observation. Mr. Jefferson states that there are twenty radical languages in America for one in Asia; more than twenty languages, he adds, are still spoken in the kingdom of Mexico, most of which are at least as different from one another as the Greek and the German, the French and the Polish. The variety of idioms spoken by the people of the new continent, and which without the least exaggeration may be stated at some hundreds, offers a very striking phenomenon, particularly when we compare it to the few languages spoken in Asia and in Europe. Vater also informs us, that in Mexico, where the causes producing insulation of the several tribes have been for a long time in a course of diminution, Clavigero recognised thirty-five different languages. Some of these words are rather of difficult pronunciation, and Humboldt tells us that Notlazomahuiztespixcatatzin is the term of respect with which they addressed their priests. During the French revolution, a learned Jacobin discovered that the early Peruvians adored a divinity who patronized the Sans-culottes, of their day, and who was named Cawaltze-quos, i. e. without breeches. Such barbarous words do not constitute that engaging tongue that Shakspeare calls “speaking holiday,” but rather confirms Byron’s ideas of the Russians’ difficult expressions, which no man has leisure to pronounce except on high-days and holidays.

Although brutes pronounce no articulate sounds, there is, no doubt but they have a language perfectly intelligible to one another. Their manner of expressing their different emotions is in some instances perfectly distinct; and birds have most decidedly a peculiar language. The following may be said to be the words of a nightingale’s strain observed by Bechstein, an ingenious ornithologist, and committed to paper several times while he listened with deep attention to that sweet bird’s “complaining notes,” that “tune our distresses and record our woes.”

Tiouou, tiouou, tiouou tiouou
Shpe, tiou, tokoua
Tio, tio, tio, tio.
Kououtio, kououtio kououtio,
Tskouo, tskouo, tskouo,
Tsii, tsii, tsii, tsii, tsii, tsii, tsii, tsii tsii tsii,
Kouoror tiou. Tskoua pipitskousisi
Tso, tso, tso, tso, tso, tso, tso tso, tso, tso, tso, tso, tsirrhading!
Tsisi si tosi si, si, si, si, si, si, si.
Tsorre tsorre tsorre tsorrehi
Tsatn, tsatn, tsatn tsatn tsatn tsatn tsatn tsi,
Dlo, dlo, dlo dla, dlo dlo dlo dlo dlo
Kouioo trrrrrrrrtzt
Lu, lu, lu, ly ly ly li li li li
Kouio didl li loulyli
Ha guour, guour, koui kouio!
Kouio, kououi kououi kououi koui, koui, koui, koui,
Ghi ghi ghi
Gholl, gholl, gholl gooll ghia hududoi
Koui koui koui ha hia dia dillhi!
Hets, hets, hets, hets, hets, hets, hets hets, hets, hets
Hets, hets, hets, hets, hets
Tourrho hostehoi
Kouia, kooia, kouia, kouia, kouia kouia kouia kouiati!

A story is related of an irascible Irish piper of the name of Molroy, who declared a war implacable against the feline race, as he swore that they invariably pronounced his name in their nocturnal concerts. Gall and various observers of animals have fully ascertained that the attention of dogs is awakened by our conversation. He brought one of these intelligent creatures with him from Vienna to Paris, which perfectly understood French and German, of which he satisfied himself by repeating before it whole sentences in both languages. A recent anecdote has been related of an old ship-dog, that leaped overboard and swam to the shore on hearing the captain exclaim, “Poor old Neptune! I fear we shall have to drown him!” and such was the horror which that threat inspired, that he never afterwards would approach the captain or any of the ship’s company, to whom he had previously been fondly attached. It must, however, be observed that in the brute creation, as in ours (sometimes more brutal species), peculiar attributes, that do not belong to the race, distinguish individuals gifted with what in man we might call a superior intellect, but which in these animals shows a superiority of what we term instinct. Spurzheim relates an instance of a cow belonging to Mr. Dupont de Nemours, which, amongst the whole kindred herd, was the only one that could open the gate leading to their pastures; and her anxious comrades, when arriving at the wished-for spot, invariably lowed for their conductor. It is also related of a hound, who, unable to obtain a seat near the fire without the risk of quarrelling with the dozing occupants that crowded the hearth, was wont to run out into the court-yard barking an alarum that brought away his rivals in comfort, when he quietly reentered the parlour, and selected an eligible stretching-place. This animal displayed as much ingenuity as the traveller who, according to the well-known story, ordered oysters for his horse for the purpose of clearing the fireside.