192 
Mr. Read’s Meteorological Journal 
Days. Winds. Barom. sTher. Sparks, 
1 
I 
inches. 
0 
June 1 8: 
SE 
29.89 
60 
19 
SW 
29.88 
20, 
SW 
29.65 
63 
21 
SW 
29.71 
59 
22 
23 
$4 
SW 
sw 
SW 
fmall 
o 
o 
fmall 
Pof. 
Ncg. 
pof. 
29.49 
29-54 
29 60 
56 
57 
61 
neg. 
— neg 
fmall 
fmall 
pof. 
pof. 
neg 
The weather (howery ; the rod pretty 
well eledrified. 
Balls open fix-tenths of an inch. 
Weak ligns ; balls not open. 
This morning feveral heavy clouds pafled 
I over, coming from the SW, by which 
the rod became moderately eledrified 
negatively. Some rain fell, which 
increafed the eledrical charge. But, 
in the afternoon, the wind and cloud 
put on a more ominous appearance ; 
near five o’clock, began a florm of 
wind, rain, lightning, and thunder; 
but the main weight of the ftorm did 
not come near my rod. Its dire efteds 
muft be eafl: of London : neverthe- 
lefs, I had thofe ufual beautiful ap- 
pearances which attend a firong charge 
in the rod. The ftorm lafted one full 
hour, during which time there were 
five fucceflive changes of the eledri- 
city, viz. four gradual ones, attended 
with fudden jerks or fiarts, which 
often diminiflied the divergency of the 
pith balls from 4 inches to 2 inches or 
lefs. After thofe jerks the pith balls 
recovered their former degree of di 
vergency, fometimes fuddenly, and at 
other times llowly. The other change 
happened inllantaneoufly, the pith 
balls collapfing and opening fo quickly 
that the eye could barely fee their mo 
tion. There were two other inftan 
taneous clofings and openings of the 
balls, without a change of the eledri 
city. Much lightning at Gravefend 
to-day. 
The rod was in charge all day. 
Moll: of the forenoon. Afternoon fome 
rain fell, and the rod became eledri- 
fied negatively, and ended pofitively 
A.M. 
June 
