A HISTORY OF LAND MAMMALS IN
THE WESTERN HEMISPHERE
THE MACMILLAN COMPANY
NEW YORK · BOSTON · CHICAGO · DALLAS
ATLANTA · SAN FRANCISCO
MACMILLAN & CO., Limited
LONDON · BOMBAY · CALCUTTA
MELBOURNE
THE MACMILLAN CO. OF CANADA, Ltd.
TORONTO
Frontispiece.—A Pleistocene tar-pool in southern California: †Giant Wolves (Canis †dirus) and †Sabre-tooth Tiger (†Smilodon californicus) on the carcass of an elephant (Elephas †columbi). The elephant is hairless, as may have been true of the southern race.