5 ® 
Mr. cavallo’s Account of 
Time of Obfervation. 
Clouds. 
Fog. 
Wind. 
lOpening of 
the Electro- 
meter in 
Eleftri- 
city. 
inches. 
Oft. 19th, 
io§ o’clock. 
Cloudy. 
f Very little at 
\ a diftance. 
f Very 
l llrong. 
1 
1^5 
Negative. 
1 1 
2 
Heavy clouds. 
„ , . — 
Violent. 
3 
4 
Pofitive. 
2 $ 
Lefs cloudy. 

Little. 
I 

3 
Few atadillance. 
— 
— 
T 
X 
Negative. 
8 
0 
0 
— 
— 
— 
061 . 31ft, 
1 1 poll mer. 
— 
— 
0 
I 
2 . 
— 
Nov. 6th, 
1 1 poll mer. 
Very thick. 
I 
— 
From the above-mentioned journal I have deduced the 
following general obfervations. 
i ft, That there is in the atmofphere at all times a 
quantity of electricity ; for whenever I ufe the above 
defcribed atmofpherical electrometer it always acquires 
fome electricity. 
adly, That the electricity of the atmofphere or fogs 
is always of the fame kind, namely pofitive; for the 
electrometer is always negative, except when it is evi- 
dently influenced by heavy clouds near the zenith. 
3dly, That the ftrongeft electricity is obfervable in 
thick fogs, and the weakeft when the weather is cloudy 
and there is a ftrong appearance of rain ; but it does not 
feem to be lefs at night than in the day-time. 
DESCRIP- 
