TEXT-BOOK 



OF 



EMBRYOLOGY 



VOL. II. — continued. 



" Professor MacBride, who wrote the volume on Invertebrates, carried 

 out his work with complete success, displaying powers of clear exposition 

 and a balanced judgment with regard to theory. Professor Graham 

 Kerr's systematic exposition of the facts is admirable, and, as he has been 

 able to choose many of his examples from his own investigations, he has a 

 right to speak with authority. The volumes are a great testimony to the 

 exactness and comprehensiveness of British morphological science." — 

 The Times. 



VOL. Ill 



MAMMALIA 



BY 



The Late RICHARD ASSHETON, Sc.D., F.R.S. 



Completed by F. H. A. Marshall, M.A., ScD., 

 and J. T. Saunders, M.A. 



\In preparation^ 



Crown %vo. 5s> net. With Illustrations. 



LECTURES ON SEX AND 

 HEREDITY 



DELIVERED IN GLASGOW, 1917-1918 



BY 



Prof. F. O. BOWER, Sc.D., Prof. J. GRAHAM KERR, M.A., 

 and Prof. W. E. AGAR, D.Sc. 



"Excellent little book. . . . No one who has a natural interest in 

 living things, but has had no systematic training in biology, can fail to find 

 these lectures interesting.'' — Nature. 



"In these lectures the leading facts relating to sex in animals and 

 plants are set out with a simplicity and breadth of view which should 

 commend them to a wide circle of readers." — Journal of Education. 



LONDON : MACMILLAN AND CO., Ltd. 



