<p type="main"> <s>Along the &longs;ide of this Tube was pa&longs;t<lb/>
ed a &longs;traight narrow piece of Parchment, <lb/>
divided into twenty &longs;ix equal parts, mark<lb/>
ed with black Lines and Figures, that by <lb/>
them might be mea&longs;ur'd both the inclu<lb/>
ded Air and its dilatation. </s> <s>Afterwards <lb/>
we fill'd the Tube with Water almo&longs;t to <lb/>
the top, and &longs;topping the open end with <lb/>
a Finger, and inverting the Tube, the <lb/>
Air was permitted to a&longs;cend to the above<lb/>
mention'd Gla&longs;s bubble. </s> <s>And by rea<lb/>
&longs;on this a&longs;cent was very &longs;low, it gave us <lb/>
the opportunity to mark how much more <lb/>
or le&longs;s then one of the twenty &longs;ix divi&longs;i<lb/>
ons this Air took up. </s> <s>By this means, af<lb/>
ter a tryal or two, we were inabled to con<lb/>
vey to the top of the Gla&longs;s a bubble of <lb/>
Air equal enough, as to &longs;ight, to one <lb/>
of tho&longs;e Divi&longs;ions: Then the open end <lb/>
of the Tube being put into a &longs;mall Viol, <lb/>
who&longs;e bottom was cover'd with Water <lb/>
about half an Inch high; we included <lb/>
both Gla&longs;&longs;es into a &longs;mall and &longs;lender Re<lb/>
ceiver, and cau&longs;ed the Pump to be &longs;et a<lb/>
work. </s> <s>The event was, That at the fir&longs;t <lb/>
ex&longs;uction of the Air there appear'd not <lb/>
any expan&longs;ion of the bubble, comparable <lb/>
to what appear'd at the &longs;econd, and that <lb/>
upon a very few ex&longs;uctions the bubble