( *53 ) 
XIII. An Account of fame farther Experiments 
touching the Afcent of Water between two Glafs 
planes in an Hyperbolic Curlse. By the late Mr. 
Fr. Hauksbee, F. R. S. 
T HE Figure of the Hyperbolick Curve, form’d by 
the Afcending of Water between two Square Glafs 
Planes, as related in Pbilofoph. Tranfaff. Numb. 336. 
gave me occafion to make fome farther Enquiries *, and 
by many Experiments i find, that the fameCurve holds 
in all Directions of the Planes, the Affymtotes being al- 
ways, one the Surface of the Water, the other a Line 
drawn along the touching Sides. Thus, when the touch- 
ing Sides were plung’d under the Surface of the Water, See 
and the Angle c was deprefs’d and made to remain 
lower than the Angle a. as in Fig. 1, then would be 
produc’d fuch an oblique Curve, as may be obferv’d in 
that Figure. In all the feveral Schemes, a h reprefents 
the Surface of the Wa er on the outfide of the Planes* 
vnd a c the touching Sides of the fame. Now, tho’ 
the Curve cl d rifes between the Planes in fuch an 
obliquity, yet does it conform it felf in its Figure to the 
Afl'ymtotes, viz. a b the Surface of the Water, and a c the 
touching Sides of the Planes* for fuppofing the A if V tu- 
tors a. c to be continued, as in the prick’d Line, till it 
furmounts the Surface of the Wafer to fuch a height, or 
fuppofe the Planes extended in the fame manner, then 
would the W’ater remain between them in the appear- 
ance of the prick’d Lines, being at all d'ftances from 
the Axis of the Curve, equal in refpeCt to the Aflym- 
X totes, 
