( i6o ) 
experiment III. 
BV the foregoing Experiments I found, that neither 
the iVure of the V elfel, nor the Prefence of the Air, did 
any ways affift in the Produaion of the forementioned 
A Leainnce To try therefore whether a quantity of 
Matter would help to unriddle the Mifteiy ; I pro- 
duc’d two Tubes of an equal Bore,as near as I could, but 
o( very unequal Subftances, one of them being at leaft 
ten times the thicknefs of the other; yet when I came 
to plunge them into the premention d Liquid, the Aftent 
rvf k feem’d to be alike in both. Now fince the toi m 
he Velfel, the prefence of the Air, or the quantity 
Af Matter that eompofes the Velfel,do not any thing coii- 
^hum to the Produaion of the Ph^enomenon,^ it may 
."Samife, to inquire a little into the Nature and Pro- 
perty of fome other Body, that operates with equal Vi 
SL J under the prementioned Circumllances ; and by 
I Comparifoii of one with the other, we may at length 
arrive nearer to account for the fame. 
AVhat I thall now ufeto compare withthefe Experi- 
‘ A form will attraa Iron. 
So by the firil: Experiment, the Figure of the \ elfel 
, feems no ways to contribute to the Afcent of the 
' Sprondlv The Magnet is no ways lelfen’d mits vi- 
gour of SWaion, even info thin a Medium as a Fa^ 
D 
bv the fecond Experiment we find the prefonce of 
th^ Air^to be no ways necelfary to affift in the Afcent of 
the Water, in fmall Tubes, or between the Planes. 
Thirdly, 
