[9M 
The cotton with the animal in the middle, and its 
ecgs of the natural fize. 5. An egg by the firft magni- 
fier. 6. Two coccufes greatly magnified. 7. The 
infedt greatly magnified. 
I fend you alfo fome of the infe&s killed in vinegar 
and dryed. The cotton, and the fuppofed male in fed. 
Some young infers. Some dead infers buried up in 
their cotton, fome of which layed eggs, others not, 
fome void coccus (hells, fome young ones, fome eggs, 
etc. and alfo the polygonum minus. 
P. S. The 1 2th of Odtober, at 8 o’clock in the 
evening, we had here a ftrong aurora borealis. It 
lafted but a quarter of an hour. The fhooting rays 
were white, and went all round from the horizon, 
making up at leaft three quarters of the circle of the 
horizon, the middle being juft in the north. The 
rays pointed all towards one point of the heaven, 
which point was not the zenith, but at lead: 20 de- 
grees farther diredtly again!! the South. It was a 
fair day. No wind or rain followed it j but the air 
vyas calm before and after. 
» 
W arfaw, Nov. 23, 1763. 
XVI. A 
