7\\ 

 M7„ 



MANUAL OF PALEONTOLOGY 



FOR THE USE OF ST UDENTS 



WITH A GENERAL INTRODUCTION ON THE 

 PRINCIPLES OF PALEONTOLOGY 



BY 



HENRY ALLEYNE NICHOLSON 



M.D., D.SC, F.G.S., ETC. 



REGIUS PROFESSOR OF NATURAL HISTORY IN THE 

 UNIVERSITY OF ABERDEEN 



AND 



RICHARD LYDEKKER 



B.A., F.G.S., ETC. 



THIR^D EDITION 

 REWRITTEN AND GREATLY ENLARGED 



IN TWO VOLUMES 

 VOL. I. 



WILLIAM BLACKWOOD AND SONS 



EDINBURGH AND LONDON 



MDCCCLXXXIX 



All Rights reserved 



