OUTLINE OF STUDY. 3 



them. It would be expected that this separation of the deeper 

 lakes would have some effect on the character of their fauna 

 and flora, besides the effect produced by the difference in envir- 

 onment. 



The east shore of Lake Winnebago is, for the most part, high, 

 and in some places rocky. At the south end the shore is 

 swampy, — in fact it is rather difficult to distinguish between 

 lake and shore. At this end the Fond du Lac river flows in, 

 and there is a gradual encroachment of the shore line upon the 

 lake. The west shore of the lake is low, but not, to any con- 

 siderable extent, swampy, and is gradually being dotted over 

 with summer cottages. At the north end of the lake are exten- 

 sive sand beaches. The material of the lake shores is glacial 

 drift, so that everywhere the shores are lined with boulders 

 washed out of the drift by the waves. 



The bottom of the lake is generally composed of a fine mud 

 filled with organic matter. In many cases, however, a bottom 

 of boulders extends quite a distance from shore. Off Stony 

 Beach this rocky bottom extended perhaps a half a mile from 

 shore, and then is succeeded by a mud bottom without any dis- 

 tinct change in depth. In other cases the bottom near shore is 

 composed of sand or red clay. 



Before this work was undertaken, very little was definitely 

 known of the plankton of Lake Winnebago. Only occasional 

 collections had been made. It seemed necessary therefore to 

 make a continuous series of collections lasting over a consider- 

 able period in order to get a basis of comparison. It was neces- 

 sary, too, that there should be an opportunity to examine the 

 living collections, as many things are sure to be overlooked in 

 preserved material. 



Accordingly a summer station was established at Stony 

 Beach, a small summer resort about two miles south of Osh- 

 kosh. Comfortable quarters were found in an old hotel build- 

 ing, the dining room being fitted up as a laboratory. The 

 laboratory equipment and a working library were brought from 

 Ripon College. A row boat was provided for the regular daily 

 work, and, through the kindness of Mr. Chas. Schreiber of Osh- 



