< Ml? 5 
havq repeated feveral times fince at different hours , with 
the like fuccefs : It is always made with Glafs unex- 
haufted of its Air. To proceed. As to the Electricity 
of this Body upon fuch a Motion and Attrition given it 
as ufual, I do not find that it exceeds in that quality 
what already I have related in former Experiments. I 
then took a piece of fine Muflin, which was fow’d to two 
Wires bent Archwife, that it might furround the upper 
furface of the Glafs, almoft at four Inches diftance from 
it ; The Muflin I made as ragged ( by breaking the 
Threads of it every where ) as I could, ( for I find that 
Small and Light Bodies are moft apt to be affe&ed by the 
Effluvium of Glafs ) then the Motion and Attrition being 
given, it was pleafing enough to fee a Multitude of 
finall Sparks of Light every where on the ends of the 
torn Threads, which refembled fo many little Stars ob- 
fervable in a good Tellefcope in the Via Lactea 5 and the 
whole. was attended with fuch a whitenefs, by the little 
Light proceeding from them, as in that part of the He- 
mifphere taken notice of, by thofe who behold it with 
the naked Eye. 
After that I tryed, whether the Addition of Heat, by 
placing a red hot Iron juft under the Moving Glafs,, 
would advance any thing the appearance of Light, which 
I found without the Attrition of my Hand would do 
nothing, and with it no more, that I could difcover, than 
if it had been abfent 3* both, with the Glafs exhaufted of 
its Air and without. 
Now what farther I have to add, occurr’d from cb- 
ferving always that Light Bodies, approach’d near any 
part of the affficated Cylinder, would feemingly be e- 
qually Attracted, or Gravitate 3 fo that I contrived a Semi- 
circle of Wire,, which I could fallen at a conftant di- 
ftance, environing the upper Surface of the Glafs at 4 
or 5 Inches from it. This Wire had twifted round it 
fome Pack-Thread, whereby I could with Eafe hang 
14 K the 
