308 EMBRYOLOGY 



time, environmental factors, and physico-chemical changes. A good discussion 

 of the growth process. A stimulating introduction. 



Needham, J., Biochemistry and Morphogenesis, Cambridge University 

 Press, 1942. A very short introduction provides a logical treatment of the 

 general phenomenon of development. Written from a biochemist's point of 

 view with philosophical implications. 



Child, C. M., Problems and Patterns of Development, University of 

 Chicago Press, 1941. An excellent first chapter on the scope of the field 

 emphasizes the importance of regeneration and budding in a study of de- 

 velopment. Discusses the most general aspect of development and the basic 

 plan of organization of developing systems. Theoretical and thought- 

 provoking. 



For short, concise introductions to embryology consult: 



Huettner, A. F., Fundamentals of Comparative Embryology of the 

 Vertebrates, The Macmillan Company, 1941. 



McEwen, R. S., A Textbook of Vertebrate Embryology (third edition), 

 Henry Holt and Company, 1949. 



Lillie, F. R., The Development of the Chick (second edition), Henry 

 Holt and Company, 1919- 



Weiman, H. L., Introduction to Vertebrate Embryology, McGraw-Hill 

 Book Co., 1930. 



Richards, A v Outline of Comparative Embryology, John Wiley and Sons, 

 1931. 



Chapter 2 



Allen, E., Danforth, C. H., and Doisey, E. A., Sex and Internal Secre- 

 tions (second edition), The Williams and Wilkins Company, 1939. A highly 

 documented, highly critical treatment of ovulation, egg transport, and the 

 hormone which is the basis of pregnancy tests. 



Cameron, A. T., Recent Advances in Endocrinology (sixth edition), 

 The Blakiston Company, 1947. Ovulation cycle in mammals and the hor- 

 monal control. 



Arey, L. B., Developmental Anatomy (fifth edition), W. B. Saunders 

 Company, 1946. Good, clear description of the maturation of germ cells and 



