
PROCEEDINGS OF SCIENTIFIC SOCIETIES. 53 
W. W. G., Ann Arbor, Wis. ep spe insects called snow-fleas are 
probably the Podura nivicola of Dr. Fitch. They are found in winter 
at the foot of trees, under the Bic of ie they pa and also about 
manure heaps and in e 
The Heleochara communis, a homopterous insect, allied in form to the 
Cicada, or seventeen-year locust, produces the frog-spittle seen in mid- 
summer on grass. The larva sucks in the sap, which passes through the 
body and forms a frothy mass concealing the insec 

PROCEEDINGS OF SCIENTIFIC SOCIETIES. 
anaes. sane 
Essex Institute, Salem. — First Field Meeting at Haverhill, on Tuesday, 
eather. erp cy meer: on oa north hank of the Merrimac, is a 
towns, a 
of Indian barbarity is among its SL a legends. The prin- 
cipal point of attraction to the naturalist is ‘‘ Kenoza Lake,” formerly 
known as the “ Great Pond,” a lovely sheet of water, embosomed among 
the hills, covering an area of about three hundred acres. During their 
rambles in its vicinity the party was rewarded in finding many interest- 
ing apre in the various departments. 
The afternoon session was held in the North Congregational Church, 
and was called to order at 2.30 o'clock, Vice-president Fowler in the chair. 
Dr. George B. Loring, of Salem, made a few eloquent remarks on the 
prospects of the year, and the occasion which had brought them together. 
F. W. Putnam, of Salem, gave a description of the habits of the common 
Plant-louse. Dr. James R. Nichols, of Haverhill, remarked that chemi- 
ta 
the pgg and library of the Institute, and alluded in very 
terms to cent donation of Mr. George Peabody, for the e promotion 
of science ie useful knowledge in this county. Edward S. Morse, of 
Salem, drew a comparison of the studies of the naturalist near the =: 

ren Ordway, of Bradford, and others, 


