“ ‘No; because that will not account for different languages, physical differences, and anatomical diversities. It is utterly impossible for any sane man to believe that the Jaloff and other Negroes, the Maquaas and other Indians, the Mongols and other Tartars, the Kanakas and other Islanders, the European and other Caucasians, all sprang from one pair. Indeed the thing is so plain, from a merely physical point of view, without entering at all into the mental and psychical merits of the case, that he who runs may read. Observe, I have said nothing about superiority or inferiority, merely content to let Physiology speak for herself.’ “ ‘Well,’ said Ravalette, ‘you inform me that you desire to learn, being already learned to some extent. The views you entertain upon the Past are, in some sense, consonant with my own; and if you are willing to be taught, I am willing to instruct; and in any case, no harm can come of the abrasion of ideas, but perchance much of good.’ “I was delighted to hear Ravalette talk in this manner; for I felt that he was in some sort, notwithstanding our relative disparity of years, a congenial spirit, and I longed for him to unfold to me the rich fabric of his thought and experience. I had concluded, from a word dropped here and there, that he was at heart a believer in the Faith of Christendom, but in order to silence the lingering doubt I still