Sketches of the History of Man. Lord Kames (Henry Home)
Чтение книги онлайн.
Читать онлайн книгу Sketches of the History of Man - Lord Kames (Henry Home) страница 7
![Sketches of the History of Man - Lord Kames (Henry Home) Sketches of the History of Man - Lord Kames (Henry Home) Natural Law and Enlightenment Classics](/cover_pre945515.jpg)
To preserve the different kinds or species of animals entire, as far as necessary, Providence is careful to prevent a mixed breed. Few animals of different species copulate together. Some may be brought to copulate, but without effect; and some produce a mongrel, a mule for example, which seldom procreates, if at all. In<11> some few instances, where a mixture of species is harmless, procreation goes on without limitation. All the different species of the dog-kind copulate together; and the mongrels produced generate others without end.4
M. Buffon, in his natural history, borrows from Ray(a) a very artificial rule for ascertaining the different species of animals: “Any two animals that can procreate together, and whose issue can also procreate, are of the same species”(b). A horse and an ass can procreate together; but they are not, says he, of the same species, because their issue, a mule, cannot procreate. He applies that rule to man; holding all men to be of the same species, because a man and a woman, however different in size, in shape, in complexion, can procreate together without end. And by the same rule he holds all dogs to be of the same species. With respect to other animals, the author should peaceably be indulged in his fancy; but as it com-<12>prehends also man, I cannot pass it without examination. Providence, to prevent confusion, hath in many instances withheld from animals of different species a power of procreating together: but as our author has not attempted to prove that such restraint is universal without a single exception, his rule is evidently a petitio principii. Why may not two animals different in species produce a mixed breed? M. Buffon must say, that it is contrary to a law of nature. But has he given any evidence of this supposed law of nature? On the contrary, he proves it by various instances not to be a law of nature. He admits the sheep and the goat to be of different species; and yet we have his authority for affirming, that a he-goat and a ewe produce a mixed breed which generate for ever(c). The camel and the dromedary, though nearly related, are however no less distinct than the horse and the ass. The dromedary is less than the camel, more slender, and remarkably more swift of foot: it has but one bunch on its back, the camel has two: the race is more nu-<13>merous than that of the camel, and more widely spread. One would not desire distinguishing marks more satisfying; and yet these two species propagate together, no less freely than the different races of men and of dogs. M. Buffon indeed, with respect to the camel and dromedary, endeavours to save his credit by a distinction without a difference. “They are,” says he, “one species; but their races are different, and have been so past all memory”(a). Is not this the same with saying that the camel and the dromedary are different species of the same genus? which also holds true of the different species of men and of dogs. If our author will permit me to carry back to the creation the camel and the dromedary as two distinct races, I desire no other concession. He admits no fewer than ten kinds of goats, visibly distinguishable, which also propagate together; but says, that these are varieties only, though permanent and unchangeable. No difficulty is unsurmountable, if words be allowed to pass without meaning. Nor does he even adhere to the same opi-<14>nion: though in distinguishing a horse from an ass, he affirms the mule they generate to be barren; yet afterward, entirely forgetting his rule, he admits the direct contrary(b). At that rate, a horse and an ass are of the same species. Did it never once enter into the mind of this author, that the human race would be strangely imperfect, if they were unable to distinguish a man from a monkey, or a hare from a hedge-hog, till it were known whether they can procreate together?
But it seems unnecessary after all to urge any argument against the foregoing rule, which M. Buffon himself inadvertently abandons as to all animals, men and dogs excepted. We are indebted to him for a remark, That not a single animal of the torrid zone is common to the old world and to the new. But how does he verify his remark? Does he ever think of trying whether such animals can procreate together? “They are,” says he, “of different kinds, having no such resemblance as to make us pronounce them to be of the same kind. Linnaeus and Brisson,” <15> he adds, “have very improperly given the name of the camel to the lama and the pacos of Peru. So apparent is the difference, that other writers class these animals with sheep. Wool however is the only circumstance in which a pacos resembles a sheep: nor doth the lama resemble a camel except in length of neck.” He distinguisheth, in the same manner, the true Asiatic tiger from several American animals that bear the same name. He mentions its size, its force, its ferocity, the colour of its hair, the stripes black and white that like rings surround alternately its trunk, and are continued to the tip of its tail; “characters,” says he, “that clearly distinguish the true tiger from all animals of prey in the new world; the largest of which scarce equals one of our mastives.” And he reasons in the same manner upon the other animals of the torrid zone(a). Here truth obliges our author to acknowledge, that we are taught by nature to distinguish animals into different kinds by visible<16> marks, without regard to his artificial rule. And if so, there must be different kinds of men; for certain tribes differ visibly from each other, no less than the lama and pacos from the camel or from the sheep, nor less than the true tiger from the American animals of that name.*5 For proving that dogs were created of different kinds, what better evidence can be expected than that the kinds continue distinct to this day? Our author pretends to derive the mastiff, the bull-dog, the hound, the greyhound, the terrier, the water-dog, &c. all of them from the prick-eared shepherd’s cur. Now, admitting the progeny of the original male and female cur to have suffered every possible alteration from climate, food, domestication; the result would be endless varieties, so that no one individual should resemble another. Whence then are derived the different species of dogs above mentioned, or the different races or varieties, as M. Buffon is pleased to name<17> them? Uniformity invariable must be a law in their nature, for it never can be ascribed to chance. There are mongrels, it is true, among dogs, from want of choice, or from a depraved appetite: but as all animals prefer their own kind, mongrels are few compared with animals of a true breed. There are mongrels also among men: the several kinds however continue distinct; and probably will so continue for ever.
There remains an argument against the system of M. Buffon with respect to dogs, still more conclusive. Allowing to climate its utmost influence, it may possibly have an effect upon the size and figure; but surely M. Buffon cannot seriously think, that the different instincts of dogs are owing to climate. A terrier, whose prey burrows under ground, is continually scraping the earth, and thrusting its nose into it. A hound has always its nose on the surface, in order to trace a hare by smell. The same instinct is remarkable in spaniels. It is by nature that these creatures are directed to be continually going about, to catch the smell, and trace their prey. A greyhound, which has not<18> the smelling-faculty, is constantly looking about for its prey. A shepherd’s dog may be improved by education, but nature prompts it to guard the flock. A house-dog makes its round every night to protect its master against strangers, without ever being trained to it. Such dogs have a notion of property, and are trusty guardians of their master’s goods: in his absence, no person dares lay hold of his hat or his great coat. Waggoners employ dogs of that kind to watch during night the goods they carry. Is it conceivable, that such different instincts, constantly the same in the same species, can proceed from climate, from mixture of breed, or from other accidental cause?6
The celebrated Linnaeus, instead of describing every animal according to its kind, as Adam our first parent did, has wandered far from nature in classing animals. He distributes them into six classes, viz. Mammalia, Aves, Amphibia, Pisces, Insecta, Vermes. 7 The Mammalia are distributed into seven orders, chiefly from their teeth, viz. Primates, Bruta, Ferae, Glires, Pecora,