But since the discovery of the southern parts of Africa and India, another animal of this kind has been found, which possesses this attribute of size; an ape as tall and as strong as man, and equally as ardent after a woman as its own females; a species which are sagacious enough to make use of stones to attack their enemies, and sticks to defend themselves, and which resembles the human species still more than the pithecos, for, independently of its having no tail, a flat face, arms, hands, teeth, and nails, like those of a man, and, like him walking erect, it has a kind of visage, with features, approaching to those of mankind: its ears are of the same form; it has a beard on its chin, and not more hair on its body than man in his natural state. From these resemblances the more polished Indians have not hesitated to associate it among the human species, by the name of orang-outang, or wild man of the woods; while the Negroes, who are really as savage, and almost as ugly, as those animals, and who are not of opinion that civilization exalts our nature, have denominated it pongo, which signifies a beast, and has no relation to man. In fact this orang-outang is not only a brute but a very singular one, which man cannot look upon, without contemplating himself, and being convinced that his external form is not the most essential part of his nature.
Here then are two animals, the pithecos and the orang-outang, which must be ranked among the ape kind. There is also a third, to which, though more deformed, we cannot refuse that appellation; until very lately this animal was scarcely known, it was brought from the East Indies by the name of gibbon; like the other two it walks erect, is without a tail, and has a flat face; but its arms, instead of being proportioned to its height, are of such extraordinary length, that when it stands erect on its two feet, it touches the ground with its hands, without the smallest inclination of its body.
Next to these apes, we meet with another race of animals, which we shall indicate by the generic name of the baboon; and to distinguish them clearly from every other animal of the kind, it is necessary to observe that the baboon has a short tail, a long face, a broad muzzle, with canine teeth, larger in proportion than that of man, and callosities on its rump. By this definition, we exclude from this race all the apes which have no tails, all the monkies whose tails are as long, or longer than their bodies, and all the makis, loris, and other four-handed animals, that have their muzzles sharp and pointed. The ancients never had a proper name for these animals; Aristotle alone has pointed out one of those baboons by the name of simia porcaria, but gives a very imperfect indication of it in other respects. The Italians first called it babuino, the Germans bavion, the French babouin, the English baboon, and every modern author, who has written of it in Latin, papio. We shall therefore term it baboon, to distinguish it from the other species since discovered in the southern provinces of Africa and India. We are acquainted with three kinds of these animals. 1. The baboon, which is found in Arabia, &c. and which, probably, is the simia porcaria of Aristotle. 2. The mandrill, which is larger than the baboon, whose face is of a bluish colour, and furrowed with deep and oblique wrinkles; this is a native of Guinea, and the hottest parts of Africa. 3. The ouanderou, which is less than the baboon and mandrill; its head and face is surrounded with a very thick and long hair, and has a large white beard; it is seen in Ceylon, Malabar, and other southern parts of India. Thus we have precisely defined three species of the ape, and three of the baboon, and all of them very distinctly differing from each other.
But as Nature acts on one regular plan, connected and extended throughout all her works, and as her progress is always by minute degrees, there must be an intermediate species between the ape and the baboon. This intermediate species actually exists, and is, in fact, to be found in the magot, which fills up the chasm between the other two. It differs from the first in having a long muzzle and large canine teeth; and varies from the second, in not having any tail, although there is a small protuberance of skin at that part, which has something of that appearance. This animal, consequently, is neither an ape, nor a baboon, yet, at the same time, partakes of the nature of both. The magot, which is a very common animal in Upper Egypt, as well as in Barbary, was known to the ancients. The Greeks and Latins denominated it cynocephalus, because its muzzle resembles that of a dog. These animals, then, must be ranged in the following order: orang-outang, or pongo, is the first ape; the pithecos, the second; the gibbon, the third; the cynocephalus, or magot, the fourth ape, or the first baboon. The papio, the first baboon; the mandrill, the second; and the ouanderou, the third. This order is neither arbitrary nor fictitious, but strictly conformable to the steps of Nature.
After the species of apes and baboons, immediately follow the guenons, or monkies; that is, animals which resemble the two former, but which have tails as long, or longer than their bodies. The word guenon was anciently employed, sometimes to denote a small ape, and at others, the female; it has also been used in the sense we now take it, to denote the apes with long tails, and was probably derived from the word kébos, which the Greeks made use of for that very purpose. Of these guenons, or monkies, we know of nine species, which we shall distinguish by different names, to avoid confusion, and for the sake of regularity. The first of these is the macaque; the second, the patas, or red monkey; the third, the malbrouck; the fourth, the mangabey; the fifth the mone; the sixth, the callitrix, or green monkey; the seventh, the moustac; the eighth, the talapoin; and the ninth, the douc, so called in Cochin-China, of which country it is a native. The ancients knew only two of this class, the mone and the callitrix, which inhabit Arabia and the northern parts of Africa; they had not the least idea of any other, for they are only to be found in the southern provinces of Africa and the East Indies, countries absolutely unknown in the time of Aristotle. This great philosopher, and the Greeks in general, were so careful to affix proper names to different animals, that they denominated the ape without a tail, pithecos, and the monkey with a long tail, kébos, both of which they carefully drew from the most apparent character of these animals. All the apes and baboons which they knew, had a uniform colour; on the contrary, the monkey which we call mone, and the Greeks, kébos, has hair of different colours, and is vulgarly called the variegated monkey; this species was the most common of all those animals in the time of Aristotle; and from this character it obtained the name of kébos, which in Greek signifies a variety of colours. Thus all the animals of the ape, baboon, and monkey kind, mentioned by Aristotle, may be reduced to four, the pithecos, the cynocephalus, the simia porcaria, and the kébos; which we think ourselves sufficiently justified to rank as the pithecos or pigmy, the magot, the baboon, and the mone, not only because their particular characters perfectly agree with those mentioned by Aristotle, but also, because the other species must have been absolutely unknown to him, since they are natives of those countries into which the Greek travellers of his time had not penetrated.
Two or three ages after Aristotle, we meet with two new names in the Greek authors, callithrix and cercopithecos, both relative to the long-tailed monkey. In proportion as discoveries were made, in the southern regions of Africa and Asia, we meet with new animals, and other species of monkies; and as most of these monkies likewise were not of various colours like the kébos, the Greeks composed the generic name of cercopithecos, that is, the ape with a tail, to denote all the species of monkies, or apes with long tails; and having discovered among them one of a beautiful green colour, they called it callithrix, which signifies beautiful hair. This callithrix is found in the southern parts of Mauritania, and in the neighbouring countries of Cape Verd, and commonly known by the name of the green ape.
With respect to the other seven species of monkies, which we have indicated by the names of Macaque, Patas, Malbrouck, Mangabey, Moustac, Talapoin, and Douc, they were unknown to the ancients. The macaque is a native of Congo, the patas of Senegal, the mangabey of Madagascar, the malbrouk of Bengal, the moustac of Guinea, the talapoin of Siam, and the douc of Cochin-China; all these places were equally unknown to the ancients, and we have been careful to preserve the original names affixed to them in their native countries.
But as Nature always proceeds in a regular and gradual manner, never leaving any chasms, we meet with an intermediate species between the baboon and monkey, like that of the magot between the ape and the baboon. The animal which fills up this interval, greatly resembles the monkey, especially the macaque, but it has a broad muzzle, and short tail, like the baboon. Being ignorant of its proper name, we have called it the maimon, to distinguish it from other animals of this kind. It is a native of Sumatra, and is the only animal, as well among the baboon as the monkey species, that has no hair on its tail; and upon that account it has been described by the denomination of the pig-tailed or rat-tailed ape.
Thus we have enumerated all the animals of the old continent, to which the common name of ape has been given, though they are not only of very distant species, but even of very different genera. But what has completed the error and confusion in the arrangement of these animals is, that the names of ape, cynocephalus, kébos, cercopithecos, which were invented by the Greeks fifteen hundred years ago, have been given to animals of the new continent, which have been discovered within these two or three centuries. They knew not that the animals of Africa and of the East Indies, were not to be found in the southern parts of the new continent. Animals have been found in America with hands and fingers, and this character alone was thought sufficient to give them the appellation of apes, without considering that for transferring a name it was requisite that the animals should be of the same genus, and to apply it justly, of the same identical species. Now the animals of America, of which we shall form two classes, by the names of sapajous and sagoins, are very different from all the monkeys of Asia and Africa; and in the same manner as there are neither apes, monkeys, nor baboons, to be found in the new continent, so likewise there are neither the sapajous nor sagoins to be found in the old. Though we have already mentioned these facts in general, in our dissertation concerning the animals of the two continents, we can here prove it in a more particular manner, and demonstrate, that of seventeen species, to which number we may reduce all the ape species in the old continent, and of twelve or thirteen, to which this name of ape has been transferred in the new, there is not any of them alike, or to be found in both continents, for of the seventeen in the old we must first retrench three or four of the apes, who do not exist in America, and to whom the sapajous and the sagoins have no resemblance. Secondly, we must also retrench three or four of the baboons, which are much larger than the sagoins or the sapajous, and also of a very different form; there remains, therefore, only nine monkeys of the old continent with whom any comparison can be made. Now this species of monkeys, as well as the apes and baboons, have particular and general characters, which entirely separate them from the sapajous and sagoins. The first of these characters consists in the rump being bare, on which are natural callosities peculiar to those parts. The second is the having pouches on each side of the jaw, in which the animal can store its food. The third is in the make of the nostrils, which are narrow, and the apertures placed in the under parts, like those of man. The sapajous and sagoins have not one of these characters. The partition between their nostrils is very thick, and the apertures are placed on the sides of the nose, and not below it. They have hair on their posteriors, and no callosities; they have no pouches on each side of their jaws; and hence these animals differ not only in species but even in genus, since they have not any of the general characters common to the whole tribe of monkeys; and this difference in genus supposes still greater in the species, and demonstrates them to be quite distinct from each other.
The names of ape and monkey, therefore, have been very improperly applied to the sapajous and the sagoins. We must preserve their original names, and instead of ranking them with the apes, we should begin by comparing them together. These two families differ from each other by a very remarkable character. All the sapajous make use of their tails like a finger to hang by, and to procure what they cannot reach with their hands. The sagoins, on the contrary, cannot make use of their tail in that manner. Their face, ears, and hair, are also different; we may, therefore, very properly divide them into two distinct races.