In Chapter XIII. I have not touched on the question of the absolute origin of language--this not being necessary to my argument. On this interesting subject, however, we have, in the naming of the animals by the first man, recorded in the second chapter of Genesis, not only the primary truth of his superiority to them, but a farther indication that the roots of human speech, other than interjectional, lie in onomatopoeia, and especially in the voices of animals, and that the gift of speech was not the slow growth of ages, but an endowment of man from the first, just as much as any of his other powers or properties. An interesting discussion of this subject will be found in the concluding chapters of Wilson's "Prehistoric Man," second edition. Farther, the so-called "tallies" found with the bones of Palaeocosmic men in European caves, and illustrated in the admirable work of Christy and Lartet, show that the rudiments even of writing were already in possession of the oldest race of men known to archaeology or geology. (See Wilson, _op. cit._, vol. ii., p. 54.) I have not noticed, except incidentally, the alleged discoveries of very ancient human remains in America, as they all appear very problematical. There is, however, some evidence of the coexistence of man with the mastodon and other postglacial animals in Illinois and elsewhere. F.--BEARING OF GLACIAL PERIODS UPON THE INTERPRETATION OF GENESIS. Whatever views may be taken as to that period of cold which occurs at the close of the Tertiary and beginning of the Modern period, it can not be held to have constituted any such break as to be considered, as it was at one time, an equivalent for the Biblical chaos. This is proved by the survival through this period of a very large proportion of the animals and plants still existing in the northern hemisphere. The chronological system of animals and plants has been continuous, as the Bible represents it, since their first appearance on earth.