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THE ELEMENTS OF COMPARATIVE ANATOMY.

ON THE

ELEMENTS OF COMPARATIVE ANATOMY.

BY

THOMAS HENRY HUXLEY, F.R.S.,

PROFESSOR OF NATURAL HISTORY, ROYAL SCHOOL OF MINES; AND PROFESSOR OF COMPARATIVE ANATOMY AND
PHYSIOLOGY TO THE ROYAL COLLEGE OF SURGEONS OF ENGLAND.

ON THE CLASSIFICATION OF ANIMALS

AND

ON THE VERTEBRATE SKULL.

LONDON:

JOHN CHURCHILL AND SONS, NEW BURLINGTON STREET.

MDCCCLXIV.

U.O.D. LIDRAN