330 PROCEEDINGS OF SCIENTIFIC SOCIETIES. - 
During this month the ravages of grasshoppers are, in the West, 
ery wide-spread have just received from Major Hawn, of 
Leavenworth, ,a most interesting account of the Red-legged 
Locust ( Caloptenus a um) The mmence depositing their 
eggs the latter part of August, which are fusiform, slightly gibbous, 
a buff-color. They are placed about three-fourths of an inch 
war d 
whole presenting a cylindrical structure, not unlike a small cartridge. 
T ommence hatching in March, but it requires a range of temper- 
ature above 60° F. to bring them to maturity, and under such con- 
Pe as they become fledged in thirty-three days, and in from three to 
ve days after, they enter upon their migratory flight. 
‘“ Their instincts are very strong. When food becomes scarce at one 
point, a portion of them migrate to new localities, and this movement 
takes place ene te over large areas. In their progress they 
stop at no obstac hey can surmount. In these excursions they 
often meet with omé trains from an opposite direction, when both 
join in one. 
“The insects are voracious, but discriminating in their choice of 
food, yet I know of no plant they reject if pressed by hunger; not even 
the foliage of shrubs and trees, including pine and cedar.” —A. S. P. 
PROCEEDINGS OF SCIENTIFIC SOCIETIES. 
1 
Lyceum or Naturat History. New York, April 22, 1867.—Prof. 
h A 
the present time. Of this sketch the most important facts cited were 
as follows :— 
First, — Vegetables only have the power to assimilate inorganic sub- 
plants first, of animals only from them. Remains of eae occur in 
the oldest rocks, but only of the lowest types, seawee 
_ Second; —The first land plants appear in the Upper Saved rocks, 
