C i6<) ) 
Common Air ; for in about 4 Hours time, it had reach’d 
the Extream of its height ; which plainly fliews, that the 
Prefence of the Air is fo far from being neceifary in the 
Produdion of this old Phsenomenon^ that it is a manifeft 
Impediment to it. 
\ 
J Contlnuatkn of Experiments ^ touching the feeming 
Spontaneous Ajcent of Water^ or other Liquids, 
Mr. Fr. Hauksbee, F. 5^. vS. 
J H E Afcent of Water in Capillary Tubes has 
1 been taken notice of feme Years ago, but that 
it iliould arife between twoGlafs Plan&s, whofc Sides lie 
open to the Air, I had not fo much as received a hint of 
it before I firh: difeover’d it. And I find that this P/^.f- 
nomenon is not to be ty’d up to Glafs Bodies alone ^ for 
Stone, or Brafs, and, lor ought I know, mod other Bo- 
dies that have fmooth Surfaces, or that their Surfaces may 
become nearly Contiguous to one another, may give the 
like Appearance; as is plain by the following Experi- 
ments. I procur’d a pair of Marble Planes, that were , 
Ground as true as the Workman could make them:' 
Thefe when I had joyn’d together dry,without any thing, 
between, I plung’d the Edge of them about a quarter of 
an Inch under the Surface of the Water, and continued 
them fo for fome Minutes of lime : then taking them > 
out, I found I could not eafily part them without Hiding . 
them one from off the other ; which when I had done, .. 
'twas eafily difeoverabie how far the Water had made its 
way between them, which, upon divers tryals, I have 
found different ; but at all times, when I had newly rub- 
bed over the Planes with Wood Afhes, the Water would 
afeend higheli. Now whether the fmall DuH of the 
Afhes adhering to the Planes may contribute any thing 
towards 
