On the determination of these facts, however, depends our knowledge of animals, the exact distinction of their species, the intelligence of their genuine history and manner of treating them. But since we are deprived of knowledge so necessary, since it is not possible to proceed upon positive facts, we cannot do better than go step by step, to consider each animal individually, to look on those as different species who do not procreate together, and to write their history in separate articles, reserving for ourselves a power to unite or separate, as we shall acquire a more perfect knowledge from our own experience, or from that of others. It is for this reason that though there are many animals which resemble the sheep and goat, we have taken notice of only the domestic kinds. We are ignorant whether foreign kinds would intermix and form new races with our common species; we are therefore authorized to consider them as distinct species, till it can be proved that these foreign kinds can procreate with the common and produce fertile individuals: this degree alone constituting the reality of what should be denominated species both in the animal and vegetable kingdoms. The goat has naturally more sagacity than the sheep and can shift better for itself. He comes to man of himself and is easily familiarized; he is sensible of caresses, and capable of much attachment; he is more strong, light, agile, and less timid than the sheep; he is lively, capricious and lascivious, and it requires much trouble to conduct them into flocks. They are fond of straying into solitude, of climbing steep and rugged places, to stand and even to sleep on the tops of rocks or brinks of precipices. The female seeks the male with eagerness and ardour; she is robust and easily supported, eating almost all kinds of herbs and very few disagreeing with her. The bodily temperament, which in all animals has great influence on the dispositions, does not seem to differ essentially in the goat from that of the sheep. The interior organization of these two species of animals is almost entirely the same; they are fed, grow, and multiply in the same manner, and have the same diseases, except a few to which the goat is not subject. The goat is not, like the sheep, affected with too great a degree of heat, but voluntarily exposes himself to the liveliest rays of the sun, and sleeps therein without suffering a vertigo, or any other inconvenience. He is not alarmed by rains or storms, but appears sensible of the rigours of cold. The exterior movements, as already remarked, depend less on the conformation of the body than on the strength and variety of their sensations, for which reason they are more lively and less regular in the goat than in the sheep. The inconstancy of his disposition is strongly marked by the irregularity of his actions; he walks, stops short, runs, skips, jumps, advances, retreats, shews and conceals himself, or flies off, and all