THE

ANCIENT LIFE-HISTORY

THE

OF

EARTH

THE

ANCIENT LIFE-HISTORY

OF

THE EARTH

A COMPREHENSIVE OUTLINE OF THE PRINCIPLES
AND LEADING FACTS OF PALEON-

TOLOGICAL SCIENCE

BY

H. ALLEYNE NICHOLSON

M.D., D.Sc., M.A., PH.D. (GÖTT.), F.R.S.E., F.L.S.

PROFESSOR OF NATURAL HISTORY IN THE
UNIVERSITY OF ST ANDREWS

NEW YORK:

D. APPLETON AND COMPANY,

72 FIFTH AVENUE.

1895.