

TEXT-BOOK 



OF THE 



EMBRYOLOGY or MAN AND MAMMALS 



BY 



DE. OSCAK HERTWIG 



Professor cxtraordinarius of Anatomy and Comparative Anatomy, Director of the If. Anatomical 



Institute of the University of Berlin 



TRANSLATED FROM THE THIRD GERMAN EDITION 



BY 



EDWARD L. MARK, PH.D. 



Hersey Professor of Anatomy in Harvard University 



ity 339 ^ijHws in ifre **t anir 2 J 



BVA.-Q.V/E - fVLCRAji. A 



LONDON: SWAN SONNENSCHEIN & CO. 



NEW YORK: MACMILLAX & CO. 

 1892 



