&longs;ince we are informed, that in the <emph type="italics"/>German<emph.end type="italics"/><lb/>
Experiment, commended at the begin<lb/>
ning of this Letter, the Ingenious Tryers <lb/>
of it found, That their Gla&longs;s Ve&longs;&longs;el, of <lb/>
the capacity of 32 mea&longs;ures, was lighter <lb/>
when the Air had been drawn out of it, <lb/>
then before, by no le&longs;s then one ounce <lb/>
and (3/10) that is, an ounce and very near a <lb/>
third: But of the gravity of the Air, we <lb/>
may el&longs;ewhere have occa&longs;ion to make fur<lb/>
ther mention. </s></p>

<p type="main"> <s>Taking it then for granted that the Air <lb/>
is not deyoid of weight, it will not be <lb/>
unea&longs;ie to conceive, that that part of the <lb/>
Atmo&longs;phere wherein we live, being the <lb/>
lower part of it, the Corpu&longs;cles that com<lb/>
po&longs;e it, are very much compre&longs;&longs;'d by the <lb/>
weight of all tho&longs;e of the like nature that <lb/>
are directly over them, that is, of all the <lb/>
Particles of Air, that being pil'd up up<lb/>
on them, reach to the top of the Atmo&longs;<lb/>
phere. </s> <s>And though the height of this <lb/>
Atmo&longs;phere, according to the famous <lb/>
<emph type="italics"/>Kepler,<emph.end type="italics"/> and &longs;ome others, &longs;carce exceeds <lb/>
eight common miles; yet other eminent <lb/>
and later A&longs;tronomers, would promote <lb/>
the confines of the Atmo&longs;phere, to ex<lb/>
ceed &longs;ix or &longs;even times that number of <lb/>
miles. </s> <s>And the diligent and learned