< 2 3 34 ) 
the Threads at pretty nearly equal diftancesj the lower 
ends of which reaching within lefs than an Inch of 
theGlafs, when held approaching the Center of it, but 
appear’d, when at liberty, as in Figure the ift. 
And when the Cylinder was pretty fwiftly turn’d 
about, thofe Threads would appear by the agitated Air, 
as in Fig. the ad. But when on the lower part of the 
Glafs was applyed my hand, the Threads would then 
reprefent a Form like Fig. the 3d. And from all parts 
feem to Gravitate, or were attracted in a direft Line 
to the Center of the moving Body, fuffering no Incon- 
venience or Diforder of Poftuve by the Wind occafioned 
fey the Rapidity of the motion , and I could by flaift- 
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