24 



carried on for about three years. The work is but fairly begun ; 

 and this paper by no means represents a cuhnination point in 

 the accumulation of facts concerning this body of water. 



Campus creek meanders in a southerly and westerly direction 

 through pasture and cultivated fields and thickets, keeping to 

 the south side of its rather broad valley, which reaches a width 

 of about a half mile near the mouth of the stream. The country 

 along the sides of this valley is high and gently rolling mor- 

 ainal region. Like other streams about Charleston, Campus 

 creek is a part of the Wabash system, its waters entering this 

 river through the Embarras river and Kickapoo creek. To 

 the latter stream it is a tributary. Campus creek has four 

 principal branches, all of which flow in a southerly direction, 

 entering the main stream on its north side. The different 

 portions of this little system vary considerably as to direction 

 and rate of flow, width of bed, depth of water, topography of 

 bottom and shore, and biological conditions present.. Through- 

 out most of its course it is broken into a series of pools with 

 intervening narrows or broad shoals. The average maximum 

 depth of these pools seems to be about two feet, but a few 

 have depths as great as three feet. The current is swift in 

 narrows and about perceptible in pools. The water is very clear 

 under ordinary conditions. The bottom is, for the most part, 

 firm and light-colored, composed of various combinations of 

 clay, sand, gravel, and cobble stones. Small boulders are not 

 infrequent in the stream bed. In the deeper parts of pools, a 

 thin, dark sediment, rich in humus, often covers the bottom. 

 Dead leaves accumulate here, also, in many cases. The bank 

 in most jjlaces is grassy, and the long blades often completely 

 conceal narrow stretches of the stream. Many kinds of plants 

 grow along the shore, but distinctly aquatic seed plants are 

 scarce. The stream is rich in algaj, and these organisms are 

 being studied by Mr. Transeau. Diatoms produce a brownish 

 scum over submerged stones, sticks, and other objects as well 

 as over some areas of the bottom soil. This scum is especially 

 noticeable in early spring. 



An attempt has been made to get a complete collection of 



