Wright, Stillman, and Wilbur M. Tidd 

 1933. Summary of limnological in- 

 vestigations in western Lake 

 Erie in 1929 and 1930. Trans. 

 Am. Fish. Soc, Vol. 63, pp. 

 271-285. 

 Report on 1929-1930 study of pollu- 

 tion situation in western Lake Erie 

 as indicated by chemical analyses, 

 phytoplankton, zooplankton, and bot- 

 tom fauna . It was held that the harm 

 from the heavy pollution of certain 

 limited areas was in some measure 

 counterbalanced by fertilizing effects 

 of pollutants and that pollution prob- 

 ably was not the controlling factor 

 in the production of fish in western 

 Lake Erie. 



PUBLICATION S BY SCIENTISTS ASSOCIATED 

 WITH 

 GREAT LAKES FISHERY INVESTIGATIONS 



The following list includes the prin- 

 cipal publications of scientists not on the Great 

 Lakes staff but whose research was based 

 primarily on materials supplied by the Fish 

 and Wildlife Service or was a part of a coopera- 

 tive project to which the Service made a 

 significant contribution in the collection of data 

 or through the provision of facilities. 



Ahlstrom, 

 1936. 



AlUn, A. 

 1929. 



Elbert H. 



The deep-water plankton of Lake 

 Michigan, exclusive of the 

 Crustacea. Trans. Am. Micro. 

 Soc, Vol. 55, pp. 286-299. 

 Results of analysis of plankton from 

 vertical hauls of 1-foot cone-shaped 

 net (No. 20 silk) made from the re- 

 search vessel Fulmar. Gives 

 species, lists, grouped in categories 

 of relative abundance, of major phyto- 

 plankton groups, protozoans, and 

 rotifers. Includes comments on 

 seasonal fluctuations in abundance of 

 certain forms. 



Seining records and food of the 

 intermediate stages of Lake Erie 

 fishes . In: Preliminary report 



on the cooperative survey of 



Lake Erie- -season of 1928. Bull. 



Buffalo Soc. Nat. Sci., Vol. 14, 



No. 3, pp. 188-194. 

 Record by number and species of 

 fish taken in small number of hauls 

 with Petersen and Helgoland trawls 

 and with 50 -foot seine, and analysis 

 of stomach contents of fish taken by 

 seine . 



1929. Seining records and food of the 



intermediate stages of Lake Erie 

 fishes. In: A preliminary report 

 on the joint survey of Lake Erie. 

 Suppl. 18th Ann. Rep., N. Y. Cons. 

 Dept., pp. 95-106. 

 Report on same materials covered in 

 paper issued by same author in same 

 year un der same title . 



Burkholder, Paul R . 



1929. Biological significance of the chem- 

 ical analyses . Li: Preliminary 

 report on the cooperative survey 

 of Lake Erie- -season of 1928. 

 Bull . Buffalo Soc . Nat . Sci . , Vol . 

 14, No. 3, pp. 65-72. 

 General discussion of biological im- 

 portance of various constituents of 

 the water and description of Lake 

 Erie as a tolerably hard-water lake, 

 with moderate amounts of nitrogenous 

 substances in solution, and free of in- 

 jurious depletion of dissolved oxygen. 



1929. Microplankton studies of Lake Erie. 

 In: Preliminary report on the co- 

 operative survey of Lake Erie-- 

 season of 1928. Bull. Buffalo Soc. 

 Nat. Sci., Vol. 14, No. 3, pp. 73-93. 

 Study of the composition, vertical and 

 horizontal distribution, and seasonal 

 variation of the microplankton of east- 

 ern Lake Erie. Includes lists of phyto- 

 plankton forms, protozoans, and rotifers. 



1929. Microplankton studies of Lake Erie. 

 In: A preliminary report on the joint 

 survey of Lake Erie. Suppl. 18th 

 Ann. Rep., N. Y. Cons. Dept., 

 pp. 60-66. 



41 



