new ’Experiments in EleSIricity , &c. 23 
ring at the top, by which they hang very loofely to the 
flat piece of ivory h, which has two holes for that pur- 
pofe. By this method of fufpenfion the friction is lef- 
ffened almoft to nothing, and thence the inftrumenf is 
fenlible of a very lmall degree of electricity, im and kn 
are two narrow flips of tin-foil ftuck to the in fide of the 
glafs cdmn, and communicating with the wooden bot- 
tom ab; they ferve to convey off that electricity, which, 
when the corks touch the glafs, is commu icated to it, 
and being accumulated might difturb the free motion of 
the corks. 
In regard to its ufe, this inftrument may be ufed to 
obferve the artificial as well as the atmofpherical electri- 
city. When it is to be ufed for artificial electricity, this 
electrometer is fet upon a table or other convenient fup- 
port; then it is electrified by touching the brafs cap ef 
with an electrified body, which electricity will fometimes 
be preferved for more than an hour; in this ftate, if any 
electrified fubftance is brought near the cap ef, the corks 
of the electrometer by their converging or diverging 
more, will fhew the fpecies of that body’s electricity. 
Before we proceed farther, it is neceffary to remark, 
that the communication of any electricity to this electro- 
meter, by means of an excited eleCtric, for inftance, a 
piece of fealing wax (which we fuppofe as always elec- 
trified 
