THE EVOLUTION OF THE EARTH

AND ITS INHABITANTS

FIG. B

FIG. A Restorations of (A) the hypothetical proavian, and (B) the toothed bird Archaeopteryx. After Heilmann.

THE

OVERSITY

The Evolution of the Earth

A Series of Lectures Delivered before the
Yale Chapter of the Sigma Xi during the
Academic Year 1916-1917

NEW HAVEN

YALE UNIVERSITY PRESS

London: Humphrey Milford: Oxford University Press

MDCCCCXIX