Miscellanies. 189 
What is the food of this insect in its Zarva state? 
From what depths in the earth has it been taken? 
What has caused the locusts of one district to differ in regard to 
time from the locusts of another district? 
Do not these insects extend the boundaries of their districts? and 
if so, do not those districts, in some places, overlap or interfere ? 
Agreeably to this view, may not the same district be inhabited by — 
locusts that observe different years? 
May not their appearance in some places, therefore, seem anoma- 
lous, when in fact they observe, with exactness, the period of seven- 
teen years? 
Greatfield, Cayuga county, N. Y. 7th Mo. 8, 1831. 
2. Notice of a halo; by J. W. Tyxer, Acting Principal and 
Lecturer on Natural Sciences in the seminary of “ Oneida Confer- 
ence, Cazenovia, N. Y.”—A rare and curious phenomenon was ob- 
served at this place (Lat. 42° 55’) on the 11th of January last. The 
weather had been mild for a number of days previous, and on that 
day the thermometer ranged from 23° to 30°. The atmosphere 
Was so hazy that a shadow was but faintly visible, the haziness being 
thost dense near the south horizon, but growing rarer and finally 
disappearing a little north of the zenith. The phenomenon was ob- 
served at about 8 o’clock 45 min., morning. The azimuth of the sun 
was about 45° 90/ south east, and altitude about 11° 16’. 
The first appearance was a brilliant parhelion, about 25° west of 
the sun, and at about the same altitude. Its form at first was nearly 
“cular, and its apparent diameter a little greater than that of the 
true sun. Its light, which was of a brilliant white, was so intense as 
0 pain the eyes. Ina few moments another parhelion of equal bright- 
"ess appeared at the same distance, on the east side of the sun, and. 
at the same altitude. When first seen, it appeared a little elongated 
Vertically, and slightly colored. Both these parhelia retained their size 
= “ppearance for a few moments, and then began to lengthen in a 
Vertical direction, and to show the prismatic colors with considerable 
mancy. "Their greatest length in a vertical direction was about 
: » and the resemblance between them complete. 
h Directly above the sun appeared, ‘at the same time with the par- 
elia a colored arc, containing 45° or 50° of a circle, described 
* tadius of about 25°, having its center in the zenith and its con- 
Yexity towards the sun. “The exterior of the are was red, and this 
"as the only color that was distinctly defined. The other colors 
