TEXT-BOOK 



OF THE 



EMBRYOLOGY OF MAN AND MAMMALS 



BY 



DR. OSCAR HERTWIG 



Professor extraordinarius of Anatomy and Comparative Anatomy, Director of the II. Anatomical 

 Institute oj the University of Berlin 



TRANSLATED FROM THE THIRD GERMAN EDITION 



BY 



EDWARD L. MARK, Pn.D 



Hersey Professor of Anatomy in Harvard University 



339 gigmts m tty fct aribr 2 'gifyagmglnc 



LONDON 



GEORGE ALLEN & CO., LTD. 



RUSKIN HOUSE 

 44, 45 RATHBONE PLACE 



1912 



<J!l r'r/hts 



