( io8(^ ) 
Tn order to this, I toil’d Tome Water, and after- 
wards purged it of its Air by means of the Air-pump ; 
which being done, thofe Experiments all lucceeded in « 
the exhaufled Receiver, in the fame manner as in the • 
open Air. 
The i^th Experiment in particular was made with a . 
Tube of about 35 Inches in length, and a quarter of 
an Inch Diameter, the top of it being drawn out into 
a fine Capilla y. Which being fill’d with Water pur- 
ged of its Air, as before mention’d, the whole quan- 
tity continued fufpended in the exhaufled Receiver. 
This plainly fliews, that the fuccefs of that Experi- 
ment does not depend upon the PrefTure of the Air, 
fince the fmall quantity of Air left in the Receiver was 
b.y no means capable of fuflaining the Water at fo 
great a height, and confequently that the height, at 
which Water may be fufpended in this manner, is 
not limited by that PrefTure. 
But here I mufl not omit taking notice of a confi- 
rable Difficulty, which prefents it lelf to thofe who at- 
tentively confider this Experiment. In order to make 
which the better appear', it will be proper to obferve 
wha: happens, when a fimple Capillary Tube is fill'd 
wifh Water purged of A|ir, and inclos’d in the exhaufl- 
ed Receiver. 
In this cafe the whole Column of Water contained 
in the Tube A C B, Fig, ^d, is fufpended by the At- 
tradlion of the Anmlus ar tlae top of the Tube, A. And 
r’hough that does not immediately upon, 
any part of the Water, except what is either cpnt'iguous 
to it, or fo near as to be within the Sphere of its At- 
rradion, which extends but to very fmall difiance; 
yet it is inipofTiblc,. that .any, other part of the Wearer, 
as for mflance that at'C, flioiild part from the Water 
above it and fink down, becaufe its defeent is oppos’d 
