FOSSIL MAMMALIA, 



RICHARD OWEN, ESQ. F.R.S. F.G.S. F.L.S. 



PROFESSOR OF ANATOMY AND PHYSIOLOGY TO THE ROYAL COLLEGE OF SURGEONS IN LONDON; CORRESPONDING MEMBER OF 



THE ROYAL ACADEMY OF SCIENCES OF BERLIN ; OF THE ROYAL ACADEMY OF MEDICINE, AND PHILOMATHIC 



SOCIETY OF PARIS ; OF THE ACADEMY OF SCIENCES OF PHILADELPHIA, MOSCOW, ERLANGEN. 



A GEOLOGICAL INTRODUCTION, 



BY CHARLES DARWIN, ESQ. M.A. F.G.S. &c. &c. 



CORRESPONDING MEMBER OF THE ZOOLOGICAL SOCIETY. 



