AQUATIC INSECTS IN NEW YORK STATH 201 
use was had of the equipment of both. In addition to the 
studies made for us by Mr MacGillivray, Professor Comstock 
assigned two of his graduate students, Mr O. A. Johannsen and 
Mr K. C. Davis, to work on special groups which the station 
was desirous of having investigated; and their work, published 
herewith, speaks for itself. This arrangement has made it pos- 
sible to present now a larger body of work than the station 
independently, on its own limited resources, could have secured. 
The station sacrificed nothing in natural advantages by re- 
moval to Ithaca. While so little is known of aquatic insects, 
the fauna of one place is about as new as that of another. For 
biologic field work of any sort, Ithaca possesses very great 
advantages. It would be hard to find a place with more variety 
of situation easily accessible. This is nature’s contribution; 
and it is, of course, the first requisite of a field station. It 
rarely happens that so rich and varied a fauna and flora lie nt 
the very doors of the laboratories in which their study may be 
most advantageously carried forward. 
East hill, with the university campus spread out on one of 
its terraces, has cool swamps at its head and the Renwick 
flats and Cayuga lake at its foot, and is seamed all down its 
front by narrow gorges cut by turbulent streams. Across the 
narrow valley West hill rises with like abruptness; but it is 
of more regular contour, and its upper, gentler slopes are check- 
ered by farms. Between the two hills at the head of the lake 
is a marshy flood plain, partly timbered, and traversed by sinu- 
ous creeks and bayous. Sheltered behind the present natural 
embankment of the lake is the Renwick lagoon, characteristic 
views of which are shown in plates 1, 2 and 20. This is a great 
natural aquarium, teeming with plant and animal life. It is 
also a natural foraging ground for many of the lake fishes. 
| The open lake is but a stone’s throw to the northward, and 
the lagoon opens directly into one of the several nearby creeks. 
Plates 3 and 32 show situations along two of the creeks of East 
‘ull near the university campus and 600 feet above the lake 
revel. These are pictures of collecting grounds utilized in gath- 
