r 54+ 1 
At the time that Mr. Le Monnier made his expe- 
ments, I, in my turn, tried to perfect the manner of 
bringing the electricity into my chamber. This 
method teem’d to me the more eftential, as tire 
gluts tubes, which Mr. Le Monnier fubftituted to the 
•electrical cakes have not the advantage of keeping the 
electricity in the iron bar, when a good deal of rain 
falls. When thefe tubes are too wet, the electricity 
eeales- 
I therefore increafed the length of my wooden 
pole, which went out of my window, and, at the 
fame time, that of my iron rod, which, was perpen- 
cularly fattened to its end. Tire greater the length 
and height of thefe two were, the ftronger was the 
electricity in my chamber 3 which led me to the two 
following oblervations : 
1. My chamber having two windows oppofite to 
each other, the one to the fouth, looking into afreet, 
and over-againft the neighbouring houfes ; the other 
to tire north, with an unbounded profpect of the 
country 3 I found the electricity was ft ronger, when 
my pole was fupported by the refin cake placed upon 
the north window, than in tire other oppofite to the 
houfes 3 which made me imagine, that the electrical 
matter was more ftrongly attracted by the neighbour- 
ing large buildings than by my pole. 
2. I obferved a confiderable diminution of the 
electricity when rain came on, altho’ the thunder 
roar’d very ftrongly, and the cake of refin on my 
window was not wet: which made me think the 
rain, as it fell, might deprive the atmofphere of the 
electrical matter, when it is in a fuffieient quantity 
to carry away with it a large portion of that matter. 
Here 
