relating to Attnofpheric El e£l ri city 
209 
Days. 
Wind. 
Barom. 
Ther. 
Sparks. 
Pof. jNeg. 
Inches. 
0 
fnowj the rod now became ftrongly 
electrified pofitively. Denfe fparks 
were now received at the ball L ; half 
after nine o’clock, the electricity 
changed to negative. I caught fome 
of the fnow in the apparatus men- 
tioned the 20th of July in this journal, 
and I found it weakly electrified. 
April 1 6 
17 
NE 
N 
29.85 
29.98 
4 1 
42 
O 
O 
pof. 
pof. 
) 
18 
NE 
29 80 
40 
O 
pof. 
Divergency of the pith balls was 
*9 
NE 
29.69 
41 
O 
pof. 
; from a tenth to feven -tenths of an 
20 
SE. 
30.26 
45 
O 
pof. 
1 
inch. Fine ferene weather. 
21 
S 
3°- 2 3 
47 
O 
pof. 
22 
S 
29.94 
5 1 
O 
pof. 
— — 
23 
24 
SW 
W 
29.7O 
29-55 
55 
52 
O 
O 
pof. 
pof. 
— 
A M. and P.M. negative from a little 
fail of rain. 
25 
SW 
29.60 
5 1 
ftrong 
pof. 
— 
Half pall nine o’clock A.M. A diltinCt 
black cloud approached the rod, and 
fome heavy drops of rain fell ; the 
eleCtricity of the rod then changed to 
negative. About half paft three 
o’clock P.M. a very large low cloud 
palled over the rod, and rained a little, 
on which the rod became Itrongly elec- 
trified pofitively. 
26 
NE 
29.85 
53 
final! 
pof. 
— - 
A.M. P.M. on the fall of fome rain, 
the rod was charged negatively. 
27 
N 
29.98 
47 
O 
pof. 
— 
The divergency of the balls from two 
^28 
W 
29.80 
50 
0 
pof. 
> to fix tenths of an inch. Serene fine 
29 
29.69 
5 1 
0 
pof. 
— — 
weather. 
3 ° 
May 1 
E 
29.58 
29-75 
53 
5 ° 
0 
fmall 
pof. 
pof. 
z 
Nine o’clock A.M. a fliower of rain j 
the electricity now became negative. 
The rod has been electrified to-day 
from fix o’clock A.M. to ten o’clock 
P.M. and I fuppofe all night alfo. 
2 
N 
•30.22 
4 1 
O 
pof. 
— 
1 Divergency of the pith balls from 
3 
1 NE 
29.85 
49 
0 
pof. 
— 
J three to feven tenths of an inch. 
4 
. SE 
29.63 
5 1 
fmall 
pof. 
A.M. 
Vol. LXXXI. 
F f 
May 
