PLANKTON - Continued 



LEA.VITT, Benjamin B. The vertical distribution of zooplankton in 

 the ocean. PhD, Harvard, 1937. 



LILLICK, Lois C. The raicroplankton of the gulf of Maine with 

 reference to its productivityo PhD, Michigan, 1938c 



MA.GKAY, Hector H. The net plankton of Lake Nipigon. PhDj 

 Toronto, 1951 » 



PIERCE, Emory Lowe, Jr. A comparative study of the plankton and 

 chemistry of the water of four aquatic habitats at "felaka, Florida.. 

 PhD, Florida, I9UI0 



PIERSON, Edgar F. Plankton development in Lake Macbride. PhDy 

 Iowa, 1939. 



RICE, Theodore R. The effect of nutrients and metabolites on 

 populations of planktonic algae. PhD, Harvard, 1950. 



RICHARDS, Francis A. The estimation and characterization of 

 plankton by spectrophotoraetric analysis of pigment extracts o PhD, 

 Washington, 19^1 » 



RYTHER, John H. The nutritional and antagonistic relations of 

 phytoplankton and zooplankton filterfeeders, with special reference to 

 Daphnia magna . PhD, Harvard, 1951. 



3CHEFFER, Victor B. The plankton of Lake Vfashinrton. PhD, Wash- 

 ington, 1937 » 



SERFLING, Robert E. Quantitative estimation of plankton from 

 small samples of Sedgewick-Rafter-Cell mounts of concentrate samples, 

 PhD, Mchigan, I9U8. 



SUTCLIFFE, William Ho, Jr. A qualitative and quantitative study 

 of the surface zooplankton at Beaufort, North Carolina. PhD^ Duke, 

 1950. 



POLLUTION 



(See also ECOLOGY , Wallen; WATER QUALITY , Stevenson) 



BENDER, Charles Richard, A study of some micro-organisms surviv- 

 ing water chlorination . PhD, Iowa State, 19U2. 



BROOKS, Phillips Moore. The effects of sulfur dioxide on the 

 aquatic plant, Elodea. PhD. Stanford, 19U3. 



31 



