( 8i ) 
I. An Jccmnt oj theKepetitknof an Experiment touching 
Motion given Bodies included in a Glafs^ by the 
Approach oj a Finger near its outjide : With other 
Experiments on the Effluvia of Glafs, By 
Mr, Fr* Hauksbee, F. S. 
T 'HIS Experiment having been but imperfedly made 
before, I thought a Repetition of fuch a fnrpri* 
fing Y^hiefjomenon would not be unacceptable to the Socie- 
ty, feeing, not only the Apparatus was better adapted, 
but ihe Appearance was much more confpkuous. For it 
was obfervable, that after the Motion and Attrition had 
been continu’d about 2 or 3 Minutes, and then ceahng, the 
Threads within feem’d to hang in a carelefs Confubon, 
and were not Inftantaneoufly erefted, bur in about 3 or 4 
Seconds of Time they v;ere fo, every way towards the 
<i)!rcumference of the Glafs ^ and feemingly with fomuch 
Stoutnefs, that a Motion of the Glafs alone would give 
them no great Diforder : but that which was the moft 
furprifing, was to fee a Morion given them by the Ap- 
proach of ones Hand, Finger, or any other Body, at 
more than 3 inches diftance from its outward furfacc, 
notwithftanding the Threads within touch’d not the in- 
ward one. And it waS farther cbfcrvable, that after e- 
very Repetition of the Motion 'of the Wheel, and the 
new Attrition of the Glafs, that the diftance, at which 
the Threads might be mov’d, feem’d to be Increas’d. And 
I have fince found that the Threads could have a notable 
Motion given them, by blowing towards the Glafs with 
(Ones Mouth at 3 or 4 Foot diftance 3 by which means 
’the 
