72 FISHES OF THE CONNECTICUT LAKES. 
similar brooks throughout the entire region. The temperature of the 
dead water of the main inlet rises to 65° IF’. near its entrance, almost 
to the temperature of the lake itself. The lake registered lower than 
any of the other bodies of water visited. On August 17, 1904, the 
temperatures were as follows: 
ee 
Depth. Seed 
Feet. SIGE 
0 66 
5 66 
10 66 
20 65 
30 52 
40 45 
#103 43 
ieee 
«Bottom. 
ROUND POND. 
The shallow water of the edge of Round Pond is turfed with needle 
rush (Hleocharis acicularis), the seven-angled pipewort (Hrzocaulon 
septangulare), and the white lobelia (Lobclia dortmanna). At places 
this turf yields to beds of Panicularia fluitans and Eleocharis pa- 
lustris, or to rocks. In deeper water is established a bed of Vymphwa 
advena. 
The height of the hills protects the lake effectually from winds and 
a long exposure to the sun. The temperature of the surface was that 
of First Connecticut Lake at the same time, due possibly to the 
broad shallow margin exposed to sun and air, but the temperature 
declined very rapidly with the depth as follows: 
— 
Depth. |? ae 
Feet. SH, 
0 69 
20 52 
30 45 
a47 44 
eee e Veer ie SCA De Pe 
«Bottom. 
The color of the water was brownish, but otherwise clear and of 
good flavor. On the whole this lake very closely resembled Third 
Connecticut Lake as a plankton environment. 
LOCATION OF THE PLANKTON STATIONS. 
First Lake.—Six permanent plankton stations were established and 
marked by buoys. Their positions are indicated by capital letters 
upon the accompanying map. 
