relating to Atmofpheric Electricity. 
l 9T 
Days. 
Winds. 
Barom. j 
Then 
Sparks. 
Pof. 
Neg. 
Aug. 2 7 
18 
20 
21 
22 
NE 
NE 
NE 
E 
SE 
W 
Inches., 
30.26 
3 °- 3 2 
30.25 
29-95 
29-75 
29-75 
0 
61 
61 
60 
6 3 
6 3 
56 
1 
frnall 
O 
O 
O 
ftrong 
ftrong 
— 
neg. 
neg. 
neg. 
neg. 
in high charge great part of the day.The 
fparks at the brafs ball L were very pun- 
gent ; even the air in the room, and the! 
uninfulated bell, and. other things,! 
fhewed that they were electrified. The! 
bell rang brilkly at three very different 
times. This ftrong charge of the rod! 
continued full four hours ; and thej 
electricity, during that time, changed 
in kind ten times. Eight of them 
were gradual, two of them were 
quick, and attended with jerks. Is 
heard fome rumbling of thunder at a| 
great diftance. At Dunwich, in Suf- 
folk, this day, much lightning and 
thunder. 
A.M. 
Balls open nine-tenths of an inch, 
| Weak figns; balls not open. 
P.M. a ftrong charge in the rod, but 
of fhort duration. 
The rod was in high charge ten hours 
this day, except a few frnall intervals ; 
there w^ere nine gradual changes of the 
electricity, from negative to pofitive, 
and the contrary.. The bell rang very 
brifkly at three different times during 
that period. There were feveral 
fhowers of rain, and one of hail ; 
during the latter, the eleCtric charge 
in the rod was moft intenfe; the 
fparks darted between the ball and bell 
extremely fharp and quick. I found 
the moifture in the air of the room 
was now eleCtrified, alfo the bell, and 
its metallic connexion with the earth, 
and even the bricks in the wall to 
which the metal is faftened were all 
eleCtrified with an electricity contrary 
to that in the infulated part of the ap- 
paratus. An electrician (who had 
often in vain called at my houfe to fee 
