DEVELOPMENT - Continued 



ROWLEY, JEAN B, Discrimination limens of pattern and size in 

 the goldfish Carassius auratus . PhD, Columbia, 1935= 



SCRIMSHAW, NEVIN STEWART. Embryonic growth in viviparous 

 cyprinodant fishes. PhD, Harvard, 19hl. 



SELF, JOHN To Analysis of the development of fish embryos by 

 means of the mitotic index, PhD, Oklahoma, 1936. 



WARNER, EDWARD NELSON. Studies on the embryology and early life 

 history of the gizzard shad, Dorosoma cepedianum , Le Sueur. PhD, 

 Ohio, 19U1- 



WILLIAMS, LYLE L» A comparative study of the development of the 

 liver in teleost fishes with special reference to the relation between 

 liver and yolk-periblast. PhD, North Carolina, 1939. 



FISH POISONS 



DAVIDSON, RALPH Ho Field and laboratory studies of Derris as 

 an insecticide o PhD, Ohio, 1935- 



SMITH, CHARLES L. The causes underlying the rapid loss of 

 toxicity of pyrethrum and derris insecticides after application and 

 methods of retarding this decomposition. PhD, Rutgers, 1937 • 



TISCHLER, NATHANIELo Studies on how Derris kills insects. 

 PhD, Rutgers, 1935. 



LIMNOLOGY 



(See also ECOLOGY, Doan, Lindeman, Reif, Ricker) 



ADAMS, JAMES R. The biotic cycles in northern pond communities. 

 PhD, McGill Univ., 19U1. 



ANDREWS, JAY Do The macroscopic invertebrate populations of the 

 larger aquatic plants in Lake Mendota. PhD, Univ. of Wisconsin, 19U7- 



BALL, ROBERT CRAGINo Relationship of the invertebrate fauna to 

 the fish population in Third Sister Lake, Washtenaw County, Michigan. 

 PhD, Univ. of Michigan, 19U3- 



BENNETT, GEORGE W. Limnological investigations in Wisconsin and 

 Nebraska. PhD, Univ. of Wisconsin, 1939- 



20 



