[ 3 So 3 
Rcafon, having no other to give him more plaufible ; 
and to bring the whole Operation, as near as might 
be, to its did Circumdances, we met together, to 
the Number of fourteen, at M. Bianchi’S, where we 
were expeded - y and we were eledrized, one after 
the other, by him, as long a time as he judged 
proper, fometimes with Scammony, and fometimes 
with Gamboge, which he himfelf had chofen. 
The Machine ufed this Day was the fame, with 
which M. Bianchi had always made his own Ex- 
periments. It confided of an hollow Glafs Cylin- 
der, three Inches in Diameter, and fomething moie 
than half a Foot in Length * *, mounted between two 
Supporters upon a Board, which was fattened to a 
Table with Screws. This cylindrical Veflel was 
turned round, without any other intermediate Ap- 
paratus, by an Handle, which was at lead four 
Inches in its Radius ; fo that the Hand, by which 
this Machine was turned, revolved with greater Ve- 
locity than the Surface of the Glafs Cylinder, which 
was thereby put in Motion. 
This Machine had this Convenience, that one 
Perfon. only might turn the Handle with one Hand, 
and rub the Surface of the Glafs Vedll with Ins 
other : But there is no Difficulty in comprehend- 
ing, that the Eledricity could not but be always 
very weak with fuch a Cylinder, and from fuch 
Fridion ; fo that, in the Experiments of this Day, 
we were fcarce able to perceive any Snaps, in touch- 
ing the iron Chain, by which the Eledricity was 
•>. r com- 
t t i 1 w' - L 0 - • - • - r ' 1 A 
* The Author here means the F rerxh Foot. 
j 
