Intelligence and Miscellanies. 199 
” Here is an error, committed by the compiler. The 
locality exists in Cornwall, Vt. but not in Cornwall, in Conn. 
“ Hornstone, Bridgeport,” Con. “ Hall.” This should be Brid- 
There a e many other errors of asimilar nature, which I have 
not time at pte / to look up. F. Haw 
7. Awrora Borealis—Magnetic Needle, §c.—Communicated by 
L. D. Gale.—I noted in my private journal, some remarkable 
phenomena of the Aurora Borealis, during the 28th, 29th, and 
3ist of August, 1827, which I intended at that time to communi- 
cate for your J ournal ; but thinking that others more capable 
than myself, would better describe the same, I neglected to com- 
municate my observations. Seeing, however, no observations on 
the magnetic needle, in the numerous notices in your Journal, 
except that of M. Arago, who states, that “‘ The Aurora Borealis 
announced itself as early as 8 P.M. Tuesday 25th, by a ver. 
ieee er disturbance of the eer needle’s diurnal varia- 
on ay, which latter must have been the time referred to 
MQ... 
my. 
side of the house, anda dipping pedals ibént ten feet distant in 
another window n examination, I found that neither would 
come to a state of rest.. The mean of the extremes in the hori- 
zontal needle, was at least 5° west of the magnetic meridian. 
After marking the extremes ona paper card, fixed in the win- 
dow for the purpose, | left it. The dipping needle which oscil- 
lated from 64° to 75° was in pene agitation and very irregu- 
lar in its motions; sometimes rising to nearly 60° and remaining 
for a moment with a tremulous motion, and then sinking back to 
75° or 76°, having a mean dip of 69 1-2°, which is, i believe, 
according to the best needles | have scen, 2 1-2° above the true 
= of this latitude. 
e greatest variation of the needles was at 10 P. M. when I 
first placed them in the window, and it constantly decreased. 
The brilliancy of the Aurora increased till 10 o’clock 30 min- 
utes, when it gradually ascended towards the ss and at the 
same time diminished in brilliancy until 11 o’clock 30 minutes 
when its luminousness had entirely ‘ieacheaieed though there 
was a bright Aurora in the northern horizon. 
