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caufe of thunder. For when I wrote that letter 
(which was on the 20th of September 175'!), I did 
not know, that any one had the lead; conjedlure, that 
the eledlrical fire was the caufe of thunder. And I 
told many gentlemen in this kingdom, in the begin- 
ning of the year i/yi, that I thought I had difco- 
vered the real caufe of thunder. Indeed,, immediately 
after my fending that letter to you, on the i8th of 
June 3 I met fome accounts in our news-papers^, 
that iron bars, fome how or other fet up, during the 
time of thunder, were found to be electrified ; but 
from that time to this I know nothing particular of 
thofe, or any other experiments on thunder-clouds. 
I waited the publifhing of your volume of TranfaCtionSy 
for the year 1752, to inform myfelf of thefe mat- 
ters 5 but I do not find, that it is yet come to our 
kingdom. 
As I am not a plagiary, fo I would not willingly 
be thought one ; nor fhould I venture to trouble yoii 
with what I thought you may have better from other 
hands ; but as the matter of this letter appears new 
to me, fo I venture to lay it before you, without any 
other motive than to add m.y mite in the invefligat- 
ing truth. I am. 
Gentlemen, 
Your mod humble 
and mod obedient fervant. 
Hen. Eelesi 
My 
