them bemore exactly try'd by the Tori<lb/>
cellian Experiment, if we could get Tubes <lb/>
&longs;o accurately blown and drawn, that the <lb/>
Cavity were perfectly Cylindrical. </s></p>

<p type="main"> <s>To dwell upon all the &longs;everal Refle<lb/>
ctions, that a &longs;peculative Wit might <lb/>
make upon this and the foregoing Expe<lb/>
riment: (I mean the thirty third and thir<lb/>
ty &longs;econd, would require almo&longs;t a Vo<lb/>
lume, whereas our occa&longs;ions will &longs;carce <lb/>
allow us time to touch upon three or <lb/>
four of the chief Inferences that &longs;eem de<lb/>
ducible from them, and therefore we &longs;hall <lb/>
content our &longs;elves to point at tho&longs;e <lb/>
few. </s></p>

<p type="main"> <s>And fir&longs;t, as many other <emph type="italics"/>Phænomena<emph.end type="italics"/><lb/>
of our Engine, &longs;o e&longs;pecially, the two <lb/>
lately mention'd Experiments, &longs;eem ve<lb/>
ry much to call in que&longs;tion the receiv'd <lb/>
Opinion of the Nature or Cau&longs;e of Su<lb/>
ction. </s> <s>For 'tis true indeed, that when men <lb/>
&longs;uck, they commonly u&longs;e &longs;ome manife&longs;t <lb/>
endeavour by a peculiar motion of their <lb/>
Mouthes, Che&longs;ts, and &longs;ome other con&longs;pi<lb/>
ring parts, to convey to them the body <lb/>
to be &longs;uckt in. </s> <s>And hence perhaps they <lb/>
have taken occa&longs;ion, to think that in all