LIMNOLOGY - Continued 



HUGHES, Elwyn Owen. FreshHiiiater algae of the maritime provinces. 

 PhD, Ohio, 19U3. 



IDE Fo P« Tlie effect of temperature on the distribution of the 

 Mayfly (Epheraeroptera) fauna of a stream. Post embryological develoi- 

 ment of Ephemeroptera (Mayflies) external characters only. PhD, 

 Toronto, 193U. 



IRWIN, William Henry. The Culicinae of certain northern IVIichigan 

 bog mats with special reference to the limnological dynamics influenc- 

 ing their production. PhD, Michigan, I9U0. 



JAHODA, William J. Seasonal difference in distribution of 

 Diaptomus (Copepoda) in western Lake Erie. PhD, Ohio, 19U9. 



JOA, Chin-Chih. Studies on the freshwater algae of China. PhD, 

 Michigan, 1935. 



JOHNSON, Karl Richard, Plant ecology of northwestern Colorado 

 lakes and surrounding areas. Abstract in University of Colorado 

 studies , XXVI; 2:77-80, 1939. PhD, Colorado, 19U0. 



JOHNSON, I^chyle W. A study of the nucleoli of certain insects 

 and crayfish. PhD, Indiana, 1936. 



JOHNSON, Vfendell L. Limnological studies of a new artificial 

 lake in southwestern Indianau PhD, Indiana, I9UU. 



JONES, Sara E. An ecological study of large aquatic plants in 

 small ponds. PhD, Wisconsin, 19U8. 



LAING, Harlow E. Oxygen requirement for respiration and growth 

 of Nuphar advenum (Ait.) and other aquatic plants. PhD, Michigan, 1939« 



LEAKE, Dorothy Van Dyke. The algae of Crystal lake, Cleveland 

 County, Oklahoma. PhD, Oklahoma, 19UU. 



LYMAN, Frederick Earle. Limnological investigations of the 

 Emphemeroptera in Douglas Lake, Cheboygan County, Michigan, with 

 special reference to the distribution of immature stages. PhD, Michi- 

 gan, I9UO. 



MAGRUDER, Samuel R. The anatomy and histology of the fresh 

 water prosobranch gastropod, Pleurocera caniculatum undulatum Say. 

 PhD, Cincinnati, 193 U- 



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