"But what lies back of the Darwinian line of descent? So far as he is concerned nothing but "unverifiable hypotheses." For, as he puts it, he views all beings "as the lineal descendants of some few beings which lived long before the first bed of the Silurian system was deposited." ("Origin of Species," pp. 448, 489, first edition) He does not attempt to show us who these "few beings" were. But it answers our purpose quite as well, for in the admission of their existence at all, resort to the ancients for corroboration and elaboration of the idea receives the stamp of scientific approbation. With all the changes that our globe has passed through as regards temperature, climate, soil, and — if we may be pardoned, in view of recent developments — its electromagnetic condition, he would be bold indeed who dare say that anything in present science contradicts the ancient hypothesis of ante-Silurian man."