, 896 General Notes. [October, 
scopists, at its meeting in August, devoted a day to dredging and 
skimming in Chautauqua lake. The most noteworthy find was 
a specimen of the beautiful little cladoceran crustacean, Leptodora 
hyalina. This species was previously known in this country only 
from a single somewhat mutilated specimen recorded by Sink 
Smith from Lake Superior. Mr. Charles S. Fellows, however, 
has taken a few specimens from a lake near Chicago. Leptodora 
hyalina is the largest of its group, reaching a length of an inch. 
in et ea 
\ 
have separate motor and sensory roots, while in t 
region the anterior nerve arising from eac g 
motor and sensory, and the posterior was sensory alone; the 
second thoracic ganglion is a special reflex center for the grea 
claw, and that reflex actions were more marked when this gan- 
glion was separated from the brain; and lastly that there is no 
such marked decussation of nervous fibers in the central cord as 
exists in vertebrates. This last point will repay farther study, for 
bees pw coma impulses travel across the ganglia from one side to 
other. 
MINNESOTA.— 
e State, is about 
It. is, for th 
ne, July and 
Morvtatity oF Fish at Lake MILLE Lac, 
-The above lake, lying in the east central part of th 
~ twenty-two miles long and eighteen miles wide. 
most part, very shallow, and consequently during Ju 
August its waters are very warm. ee 
< Every summer for several years past, after a strong wind ‘has | 
_ been blowing on shore for a day, the beach is strewn a distance 
of many miles with thousands of fine fish. Some of these are 
found just expiring, others but just dead, and others far advanced 
in decomposition, the latter appearing to have been floating 1 the 
is a 
5 
covered with a brown slime. This in specimens 4 
uld indicate they had lived some time in a diseased 
weeks observations in June and July, I found 
