with rectifi'd spirit of Wine, in regard that liquor, by its sudden avolation from Marble, if pour'd thereon, without leaving it moist or less smooth, seem'd unable to sustain them together after the manner of a glutinous Body, and yet seem'd sufficient to exclude and keep out the Air. But this we try'd to little pur∣pose, for having convey'd into the Receiver two black square Marbles (the one of two Inches and a third in length or breadth, and somewhat more than half an Inch in thickness: The other of the same extent, but not much above half so thick) fasten'd together by the intervention of pure spirit of Wine; and ha∣ving suspended the thicker by a string from the cover, we found not that the exsuction of the ambient Air would separate them, though a weight amounting to four Ounces were fasten'd to the lowermost Marble to facilitate its falling of.I would gladly have the Experiment try'd with Marble, so well polish'd, as to need no Liquor whatsoever to make them cohere, and in a Vessel out of which the Air may be more persectly drawn than it was out of ours. But in the mean time, though we will not determine whether the spirit of Wine did contri∣bute to the strong cohesion of these stones, otherwise than by keeping ev'n the subtlest parts of the Air from getting in be∣tween them: yet it seemed that the not falling down of the lowermost Marble, might, without improbability, be ascrib'd to the pressure of the Air remaining in the Receiver; which, as we formerly noted, having been able to keep a Cylinder of Wa∣ter, of above a Foot in height, from falling to the bottom of the Tube, may well enough be suppos'd capable of keeping so broad a flat Marble from descending. And though this may seem a strange proof of the strength of the spring of the Air, ev'n when rarefied, yet it will scarce seem incredible to him that hath observ'd how exceeding strong a cohesion may be made betwixt broad Bodies, only by their immediate touching one another. A notable instance of which, I met with in this short Narra∣tive of the Learned Zucchius. Juveni (saith he) lacertorum suorum robur jactanti proposit aP. Nic. Zucchius apud Scbot. part. 1. Mec. Hydraulopneum.semel est lamina aerea, per ansam in medio ex∣tantem 0