[ 546 J 
the trunk of this flirub had a much flronger electri- 
city ; whether, at that inftant, the electricity of the 
cloud was more ftrong, (for it varies every moment) 
or that the force of the whole electricity, eapanded 
thro’ the leaves, became concentrated in the trunk of 
this fhrub *. 
The Duke then took one of his filver watering- 
pots, which was two feet and an half high j he fill’d 
it with water within an inch of the brim, and placed 
it upon the eletrical cake, dipping into it a wire of 
lead, which communicated with that wire, which 
came from the top of the pole. Of all the electricity 
tried till then, this was incomparably the ftrongeft : 
nor did I fee any fparks, when I advanced my finger 
towards it, but the fhock affected me in the arms and 
bread: with fuch violence, that I did not attempt to- 
make a fecond trial. Wherefore it would be well, be- 
fore one runs the hazard of fuch fort of experiments, 
to try the force of the electricity, by applying an iron 
wire, or a piece of fteel, fattened to a little glafs tube. 
During thcfe experiments M. le Monnier was abfent ; 
which deprived us of fome new defigns,. which he 
had refolv’d to put in practice. 
I am,. Sir, &c. 
G. Mazeas. 
* This experiment was made the 2 of July by M. le Monnier, 
and repeated, as I have now mention d it, on the 11 of the fame 
month. 
SIR,, , 
