6 University of Michigan 



Tadpoles, insect larvae, arachnids, and mollusks were com- 

 mon here. 



Station I'll was the lower part of Bessey Creek, a small 

 stream having its source in Lancaster Lake and flowing south- 

 ward a distance of about a mile into the north-west corner 

 of Douglas Lake. Xear the mouth, where the collecting was 

 done, the stream was about thirty feet wide and from five to 

 ten feet deej), and the current was very slow. Deciduous for- 

 est trees shaded the stream, and, except for occasional mud 

 Hats, the banks were covered with a thick growth of shrubs, 

 ferns, and grasses. In the water, along the margins, were 

 water lilies, eel-grass, Ceratophyllum, and species of Potamo- 

 gcton. 



Fish, tadpoles, crayfish, insect larvae of various kinds, Hem- 

 iptera, and water beetles were the most conspicuous animals at 

 this station. 



Station J 1 1 1 was a portion of Maple River near its source 

 at the west end of Douglas Lake. The stream was shallower 

 and more rapid than Bessey Creek at Station \'n, and flowed 

 through open country. The littoral vegetation was fairly 

 dense, bushes alternating with grassy banks and sandy flats, 

 but the stream itself was free from vegetation other than oc- 

 casional stands of rushes and sedges along its edges. The 

 bottom was sand, with small areas of debris and muck in 

 the back-eddies. 



Station IX was a partially filled peat bog located a short dis- 

 tance from the shore at the south-west side of Douglas Lake. 

 This station is known both as Silver Lake and as Bryant's Bog. 

 ihe latter name being the one more commonly used at the 

 Biological Station. The open-water area was roughly L-shaped, 

 surrounded and overgrown on all sides by a floating mat of 

 Chamaedaphne and Sphagnum. There was a "false bottom"' 



