relating to Atmofpheric EleSlricity . 
*95 
Days. 
Wind. 
Barom. ITher. 
Sparks. 
Inches. 
0 
t 
July 21 
sw 
2 9* I 5 
flrong 
22 
sw 
29.10 
61 
flrong 
23 
w 
29. 10 
5 1 
flrong 
24 
w 
29.15 
7 1 
fmall 
25 
w 
29.20 
71 
0 
26 
w 
29.10 
1 69 
0 
Pof. Neg. 
p°f. 
neg 
neg. 
neg. 
ball L. This bottle charged and fpon- 
taneoufly difcharged almoft as quick as 
I could notice them ; and at the fame 
time there was a continual flafhing 
of denfe fparks between the bell and 
brafs ball L. Thefe very grand appear- 
ances only lafled ten minutes, and the 
fcene was terminated by a clap of 
thunder j but the florm, and its effects 
on the rod, laffed near two hours. I 
faw no lightning but what was in the 
apparatus. There were nine gradual 
changes of the electricity, from nega- 
tive to pofitive, &c. 
had purpofely placed a large glafs 
bowl, upon an infulated table, in the 
open air, to catch the falling electri- 
fied rain. As foon as the bottom of the 
bowl was well covered with the rain wa- 
ter of the above florm, to my great fatif- 
faction, a pair of linen threads I had 
placed for the purpofe diverged near 
two inches ; the water remained elec- 
trified near ten minutes after it was 
taken into the houfe. 
P.M. a little rain fell, and the electri- 
city changed to pofitive. At Edin- 
burgh and Bamff, this day, there was 
much lightning and thunder. 
A very flrong electricity in the rod all 
the forenoon. 12 o’clock feme rain 
fell, on which the rod became highly 
charged politively, the bell rang 
weakly for a long time, it then flop- 
ped, and the balls clofed, and opened 
negative, and continued fo full three 
hours. This day, near Shrewfbury, a 
florm of rain, lightning, and thunder. 
Both A.M. and P.M. and ended nega* 
tive as the preceding day. 
A.M. and P.M. pofitive. 
} Weak figns ; balls not open. An 
univerfal cloudy dark fky. 
Dd a 
