[Illustration: _Dunes at Ipswich Light, Massachusetts. Note the
effect of bushes in arresting the movement of the wind-blown sand._]




OUTLINES OF THE
EARTH'S HISTORY


A POPULAR STUDY
IN PHYSIOGRAPHY

BY

NATHANIEL SOUTHGATE SHALER

PROFESSOR OF GEOLOGY IN HARVARD UNIVERSITY
DEAN OF LAWRENCE SCIENTIFIC SCHOOL

ILLUSTRATED WITH INDEX

NEW YORK AND LONDON
D. APPLETON AND COMPANY

1898, 1910