March, 1921] Macro-Fauna of Mirror Lake 143 



leaves, which, together with constant shade of nearby over- 

 hanging trees, seemed to make conditions most unfavorable 

 for animal life. No station was established there. 



Station 4. This was located along the north shore of the 

 large pond where the spring had its outlet. At the point of 

 outlet, the water was only an inch deep and the bottom was 

 gravelly. Throughout the area considered as this station, having 

 a yard radius out from this central point, it was quite shallow, 

 but sloped down at its outer edge to relatively deeper water. 

 In this area the bottom was of uniformly fine gravel, a secondary 

 accumulation. In the deeper water beyond, mud covered the 

 bottom completely. On the shoreline for a short distance along 

 here and beyond this station, is a line of large boulders. 



Station 14. This station, a few feet east of number 4, lacked 

 the deposit of fine gravel along shore, and hence the water was 

 deeper, averaging more than a foot directly off the line of 

 shore boulders. Some projecting roots of an adjacent alder 

 tree, with some accumulation of leaves there, made this a better 

 habitat than at other similar places in the immediate vicinity. 



Station 15. This, located oh the north shore of the larger 

 pond about 30 feet west of station 4, was a situation similar to 

 most of the north shore (see description for 7) but here was 

 found overhanging grass, (even some growing in the water), 

 and some accumulation of debris, which offered a slight retreat 

 for a few forms not found elsewhere along this shore. 



Station 5. This station was on the south shore of the larger 

 pond in the deep indentation which extends southward, opposite 

 to station 4. The bank was fairly firm and about a half foot 

 above the water's surface. The bottom here was very soft and 

 muddy. The water throughout this bay was somewhat stagnant 

 as it was not moved by the winds which disturbed the main 

 east-west stretch of this pond. 



Station 6. This station also lay along the south shore, but 

 on the end of the projecting peninsula between the bay just 

 referred to and the main part of the large pond. Here the 

 water was clear and relatively deep. There was some under- 

 cutting in the clay bank, projecting roots and some overhanging 

 grass. 



Station 7. This station located on the north shore of the 

 large pond was about sixty feet east of the east approach to 



