It is likely enough that several weakly species of men and animals have perished. It is thus that we no longer discover any of the murex, of which the species has probably been devoured by other animals who several ages after visited the shores inhabited by this little shellfish. St. Jerome, in his "History of the Father of the Desert", speaks of a centaur who had a conversation with St. Anthony the hermit. He afterwards gives an account of a much longer discourse that the same Anthony had with a satyr. St. Augustine, in his thirty-third sermon, addressed "To his Brothers in the Desert," tell things as extraordinary as Jerome. "I was already bishop of Hippo, when I went into Ethiopia with some servants of Christ, there to preach the gospel. In this country we saw many men and women without heads, who had two great eyes in their breasts. In countries still more southerly, we saw a people who had but one eye in their foreheads," etc. Apparently, Augustine and Jerome then spoke "with economy"; they augmented the works of creation to raise greater admiration of the works of God. They sought to astonish men by fables, to render them more submissive to the yoke of faith. We can be very good Christians without believing in centaurs, men without heads, or with only one eye, one leg, etc. But can we doubt that the interior structure of a negro may be different to that of a white, since the mucous netted membrane beneath the skin is white in the one, and black in the other? I have already told you so, but you are deaf. The Albinos and the Darians--the first originally of Africa, and the second of the middle of America--are as different from us as from the negroes. There are yellow, red, and gray races. We have already seen that all the Americans are without beards or hair on their bodies, except the head and eyebrows. All are equally men, but only as a fir, an oak, and a pear tree are equally trees; the pear tree comes not from the fir, nor the fir from the oak. But whence comes it, that in the midst of the Pacific Ocean, in an island named Otaheite, the men are bearded? It is to ask why we are so, while the Peruvians, Mexicans, and Canadians are not. It is to ask, why apes have tails, and why nature has refused us an ornament which, at least among us, is an extreme rarity. The inclinations and characters of men differ as much as their climates and governments. It has never been possible to compose a regiment of Laplanders and Samoyeds, whilst the Siberians, their neighbors, become intrepid soldiers.