Eddy, Samuel(Champaign : Illinois Natural History Survey, 1927-11)
The chief purposes of this paper are: (1) to present a general picture of the plankton of Lake Michigan, (2) to determine the relative abundance of its constituent organisms, and (3) to incorporate and summarize the facts ...
Eddy, Samuel(Champaign : Illinois Natural History Survey, 1931-11)
The Sangamon River, a small river in the central part of Illinois,
has special interest to students of aquatic biology because it exhibits
in a remarkable way the effects of the installation of a sewage treatment