( t \71 ) 
to be attra&ed, it removing its fe!f fomething out of its 
place to the approach’d Body. But if any thing is held 
between the Glafs and the directed Thread, then the Thread 
immediately loofes hold of the Effluvia, and retires to its 
firft Pofition 5 yet upon withdrawing the Interpos’d Body, 
(if it has not remov’d it felf too far out of the Reach of 
the Effluvia) it will again return to its Tendency, and fo 
remain, till the weight of its Body is too great for the de- 
clining ftrength of the Effluvia to fupport it in fuch a Di- 
rection. I have fince try’d the fame Experiment with a 
Globe Glafs, which when the Attrition was made, would 
in all manner of Pofitions attract the furrounding Threads, 
dire&ing them towards its Centre. 
Experiment II. 
Touching the Direction of Woollen Threads every may 
from the Axis, towards the Circumference of an 
Ajfricated Glafs. 
H Aving Profecuted the Experiments of Attrition on 
the outlide of Glafs with feme Succefs, Several no* 
table Phenomena having been exhibited by them, (and 
I think what the World in a great meafure has not been 
acquainted withal before,) I thought it would not be 
amifs to continue them a little farther, by trying what 
Appearances might be afforded by placing the Woollen 
Threads, as heretofore us’d on the outfide, on the Axis 
within, and the Attrition to be made on the outward fur- 
face as ufual 5 not doubting, if any fuch Effluvia were by 
that means emitted within, that then the Threads, which 
Ihould be fix’d on the Axis, would extend themfelves, 
and point every ways towards the Circumference ©f it. 
In order therefore to put it to the iffue, I took a Globs 
Glafs about fix Inches .Diameter, and having.conyev’d in 
