42 College of Forestry 
7. Gillia altilis, 1. 
8. Bythinia tentaculata, 3. 
*9. Goniobasis livescens, abund- 
ant. 
10. Somatogyrus subglobosus, 1. 
ll. Valvata tricarinata, 1. 
12. Vivipara contectoides, i 
young. 
*13. Galba 
ant. 
14. Planorbis campanulatus, 4. 
15. Physa integra, 10. 
6. Physa ancillaria warreniana, 
9. 
*17. Helicopsyche borealis, abund- 
ant. 
catascopium, abund- 
Nos. 7, 8, 10, 11, 12, 14, 15 and 16 were evidently washed 
in from other and different habitats. 
Those species observed 
to live on the stony point are marked with an * 
Bay 
Points. 
Sration ITI. 
BETWEEN 
FirzGERALD AND Mu1LTon 
As in Station I, this field station is divisible into several 
distinct habitats characterized by varying depths and diverse 
vegetation (Fig. 7). 
Tlabitat 1. 
No. 282. 
Sheltered bay at west end of station. 
Field 
This habitat is protected from the rough waters of the 
lake by the heavy fringe of Water Willow, Sedge (Carex) 
and Bulrush (S. smithiz and S. americanus) which forms an 
effectual barrier (Fig. 8). 
Borrom: 
One to four feet in depth. 
Sandy silt, varying in hardness. 
WATER: 
Vecrrarion: Zonal and variable, as noted below. 
Zone A. Water 1-2 feet deep. 
Sedge (Carex trichocarpa) . 
Buttonbush  (Cephalanthus 
dentalis). 
Swamp Loosestrife (Decodon ver- 
ticillatus) . 
Bur-reed = (Sparganium 
pum). 
ocel- 
eurycar- 
Arrow-head (Sagittaria latifolia). 
American Bulrush (Scirpus amer- 
icanus) . 
Bulrush (Scirpus smithii). 
Zone B. Water 2-4 feet deep. 
Pickerel-weed 
data). 
(Pontederia — cor- 
Lake Bulrush (Seirpus oceiden- 
talis) . 
