( ) 
I have try’d the fame with a Glafs exhaalkd cf m 
hut it afforded nothing worthy to be taken notice of. 
Experiment III. 
Bebig a Repetition and Improvement of the former . 
I fince procur'd a Glafs of a more futable form for a 
Repetition of the foregoing Experiment. See, Fig. i. 
Fig . i* Fig. 2 * 
This Glafs was fcrewcl by the Neck to one end of a Spin- 
dle; and had motion given it by the large Wheel as ufual 
This manner of fixing, and Figure of the Glafs, gave me 
the Liberty of rubbing it as well within as without, ah 
tho 3 on tryall find, that either way is much the fame ^ for 
when the Threads are held within, and the Attrition 
made on the outfide, or the contrary, or the friftion made 
on the fame fide the Threads are us'd, makes very little 
difference. To proceed : When the Threads were fix'd on 
an Axis within, and the Motion and Attrition made. as 
ufualf the Threads did then reprefent (as I before expeft- 
ed) a form like Fig. 7. And during its refembling that 
Figure, if a Finger was approach'd near the cutfide of the 
Glafs, a motion would be given to the point of the Thread 
neared* it within, and at the fame time, if the Threads 
the 
