[ 540 ] 
The 26 of this month, at 3 afternoon, very lively 
fparks were excited, and M. Le Monnier fet fire to 
fpirits of wine. At 6 o’ clock I went up to a proper 
place, in order drictly to obferve the intervals be- 
tween the commotions and the electricity. 
The clouds extended from the fouth and wed to 
the zenith of the pole, and the lightning came from 
a very didant part ; and, in proportion as the clouds 
came nearer, the electricity was felt with very fmart 
iliocks, but without light, or regularity ; for fome- 
times none were felt for two or three minutes ; and 
it was commonly with every fladi of lightning that 
the commotion was felt. But when the clouds had 
cover’d a confiderable part of the heavens, the com- 
motions of the electricity fucceeded very quickly with 
noife and fparks ; altho’ the thunder could fcarce be 
heard, becaufe of its didance. It may from hence be 
judged, how drong the commotions would be, if the 
clouds, which produced the thunder, were nearer 
the bar. 
On the 2 9 of June we had another dorm ; but I 
was not prefent at the experiments made in the gar- 
den, being myfelf employ’d in a like experiment in 
my chamber. I placed at my window, which was 
about 3 y feet from the ground, a bar of iron of 
1 2 feet long, which receiv’d a very fharp iron wire 
of fix feet high ; the whole advanced into thedreet, 
by means of a wooden pole laid parallel to the hori- 
zon ; at the end of which was a glafs tube fill'd with 
redn, in order to receive the iron rod. The wire, that 
hung from the extremity of the pole, enter'd into 
my chamber, and from thence into a gallery of 
30 feet long. The’ electrical magazine was in my 
chamber. 
