Page:Popular Science Monthly Volume 83.djvu/22

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in the same direction. The lines of the reindeer cut all others, hence it is the latest of this group. The bison comes next, its head being hidden in part by that of the reindeer. Underneath the bison are the imperfect outlines of a mammoth recognized by the contour of the head and back, and the feet. In section two the mammoth is on top. Beneath come