which the Bureau made a significant contri- 

 bution in the collection of data or through 

 the provision of facilities. Reports on contract 

 research are listed here when the projects 

 were completed in large measure independently 

 of the Laboratory. 



AHLSTROM, ELBERT H. 



1936. The deep-water plankton of Lake 

 Michigan, exclusive of the Crustacea. 

 Trans. Amer. Microscop. Soc. 55(3): 

 286-299. 



Results of analysis of plankton fronn 

 vertical hauls of 1-foot cone-shaped net 

 (No. 20 silk) made from the research 

 vessel Fulmar . Gives species lists, 

 grouped in categories of relative abun- 

 dcuice, of major phytoplankton groups, 

 protozoans, and rotifers. Includes com- 

 ments on seasonal fluctuations in abun- 

 dance of certain forms. 



ALLIN, A. E. 



1929a. Seining records and food of the 

 intermediate stages of Lake Erie fishes. 

 In Preliminary report on the coopera- 

 tive survey of Lake Erie--season of 

 1928, p. 188-194. Buffalo Soc. Nat. 

 Sci., Bull. 14(3). 



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. 



ALLIN, A. E. 



1929b. Seining records and food of the 

 intermediate stages of Lake Erie fishes. 

 In A biological survey of the Erie- 

 Niagara system, p. 95-106. N.Y. Con- 

 serv. Dep., Suppl. 18th Annu. Rep. 



Report on same materials covered 

 in paper issued by same author in 

 same year under same title. 



AYERS, JOHN C., vide: CHARLES F. POWERS. 



BURKHOLDER, PAUL R. 



1929a. Biological significance of the chem- 

 ical analyses. In Preliminary report on 

 the cooperative survey of Lake Erie-- 

 season of 1928, p. 65-72. Buffalo Soc. 

 Nat. Sci., Bull. 14(3). 



General discussion of biological im- 

 portance of various constituents of the 

 water and description of Lake Erie as 

 a tolerably hard-water lake, with mod- 

 erate amounts of nitrogenous substances 

 in solution, and free of injurious de- 

 pletion of dissolved oxygen. 



BURKHOLDER, PAUL R. 



1929b. Microplankton studies of Lake Erie, 

 In Preliminary report on the cooperative 

 survey of Lake Erie--season of 1928, 

 p. 73-93. Buffalo Soc. Nat. Sci., Bull. 

 14(3). 



Study of the composition, vertical 

 and horizontal distribution, and seasonal 

 variation of the microplankton of eastern 

 Lake Erie. Includes lists of phytoplank- 

 ton forms, protozoans, and rotifers. 



BURKHOLDER, PAUL R. 



1929c. Microplankton studies of Lake Erie. 

 In A biological survey of the Erie- 

 Niagara system, p. 60-66. N.Y. Conserv. 

 Dep., Suppl. 18th Annu. Rep. 



Report on same materials covered 

 in paper issued by same author in 

 same year under same title. 



BURKHOLDER, PAUL R. 



1960a. A survey of the microplankton of 

 Lake Erie. In Charles J. Fish and 

 associates, Limnological survey of east- 

 ern and central Lake Erie, 1928-29, 

 p. 123-144. U.S. Fish Wildl. Serv., 

 Spec. Sci. Rep. Fish. 334. 



A study of seasonal, horizontal, and 

 vertical distribution and abundance of 

 the microplankton. Major data, given 

 largely by maps and graphs, concern: 

 diatoms; green algae; and blue-green 

 algae. Comparisons of open-lake and 

 marginal conditions are included. Com- 

 ments are offered on microplankton 

 communities. Data on Protozoa and 

 Rotifera are limited. 



BURKHOLDER, PAUL R. 



1960b. Distribution of some chemical values 

 in Lake Erie. In Charles J. Fish aind 

 associates, Limnological survey of east- 

 ern and central Lake Erie, 1928-29, 

 p. 71-109. U.S. Fish Wildl. Serv., Spec. 

 Sci. Rep. Fish. 334. 



Detailed records (including tables 

 and graphs) are given on seasonal smd 

 local differences and comparisons of 

 surface and bottom waters for turbidity 

 and the following chemical character- 

 istics: nitrogen (albuminoid and free 

 ammonia and nitrates); dissolved oxy- 

 gen; carbon dioxide; methyl-orange 

 alkalinity; pH; chlorides. Evidences of 

 pollution were limited to decidedly re- 

 stricted inshore areas. 



EGGLETON, FRANK E. 



1936. The deep-water bottom fauna of Lake 

 Michigan. Pap. Mich. Acad. Sci. Arts 

 Lett. 21:599-612. 



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