Moreover, when there is but one male to a great number of females they have not the liberty of consulting their own taste, and, consequently, deprived of those emotions which arise from spontaneous pleasures. In the females there remains nothing poignant in their amours, and they languish in expecting the cold approaches of a male that is not of their own choice, who is frequently not accommodated to them, and from whom they do not receive those flattering caresses as if he were obliged to court a preference. From these sluggish amours insipid beings must proceed, who will have neither that courage, spirit, nor strength, which Nature only can bestow on every species by leaving to individuals their faculties quite entire, especially the liberty of choice between the sexes. It is well known, in the example of horses, that the cross breed is always the finest; we ought not, therefore, to confine our female cattle to a single male of their own country, who already has too much the resemblance of his mother, and who, consequently, far from improving the species, can only continue to degrade it. Mankind, in this practice, have preferred their convenience to every other advantage; they have not endeavoured to support, or to embellish Nature, but submit her operations to them, that they may enjoy her productions in a more despotic manner. The males are the superior of each species; they have the most spirit, and are the least tractable; a greater number of males in our flocks therefore would render them less docile, more difficult to conduct and to watch. To these causes of degeneration in domestic animals we must yet mention another, which alone is capable of producing more changes than all the rest put together, viz. the transportation of animals from one climate to another; oxen, sheep, and goats, have been carried to all parts; in every place they have felt the influence of the climate, and imbibed impressions from every soil and every sky, so that nothing is more difficult than to recognize, in this great number of varieties, those who are the least estranged from the type of Nature. Having thus explained the general causes of varieties among domestic animals, I shall proceed to the particular proofs of what I have advanced on the subject of oxen and buffaloes. I have said, 1st. _That the animal at present known by the name of the buffalo was not known by the ancient Greeks, and Romans._ This is evident, since none of their authors have described, or even used, a name which can be applied to it; besides, we are informed, by the annals of Italy, that the first buffalo was brought there towards the end of the fifth century, A. D. 595.