Pegrum, Reginald H. (continued) 



deposits (principally mud and clay but with considerable 

 stretches of sand, and some rock outcrop). 



Williams, Roger C. 



1929, Pollution studies in the light of the chemical analyses. 

 In: Preliminary report on the cooperative survey of 

 Lake Erie— season of 1928, Bull. Buffalo Soc. Nat. 

 Sci., Vol. Ihs No. 3, pp. 60"6l4. 



Record of chemical analyses of water of eastern Lake 

 Erie for dissolved oxygen, various forms of nitrogen, pH, CO^ 

 and carbonates. No evidence of harmful pollution appeared 

 at any station in the open lake. 



1929. Chemical studies of Lake Erie. Ins A preliminary 



report on the joint survey of Lake Erie. Suppl, l8th 

 Ann. Rep,, N, Y. Cons, Dept., pp, 58-60. 



Report on same materials covered in paper issued by 

 same author in same year under similar title. 



Wilson, Charles B. 



1929. The maqroplankton of Lake Erie. In: Preliminary 



report on the cooperative survey of Lake Erie — season 

 of 1928. Bull. Buffalo Soc. Nat. Sci., Vol. lU, No. 3, 

 pp. 9U-135. 



Brief comments on significance of plankton in fish pro- 

 duction followed by data on horizontal and vertical distribu- 

 tion of macroplankton in eastern Lake Erie. Includes annotated 

 systematic list of organisms. 



1929, The macroplankton of Lake Erie. Ins A preliminary re- 

 port on the joint survey of Lake Erie, Suppl, l8th 

 Ann. Rep., N. Y. Cons. Dept., pp, 67-76, 



Report on same materials covered in paper issued by 

 same author in same year under same title. 



■hi- 



