■ [ <4o ] 
fecretlon is evident ; fince no pus was ever obferved 
in the urine either before, or after the introduction 
of the catheter. How this extraordinary cafe comes 
to be fo particularly circumftanced feems worthy of 
confideration. If the fingularity of it fhall merit 
any regard from your Lordfhip, and the gentlemen 
of the Society, it will give the higheft fatisfaCtion 
to, 
my Lord, 
Your Lordfhip’s 
All Souls College, moft obedient and 
Nov. 24th, 1762, 
mofl humble fervant, 
Daniel Lyfons. 
Read Dec. 16, 
1762. 
CIII. Experiments to prove that Water is 
not incompreffible \ hy John Canton, M, A* 
and F. R. S. 
AVING procured a fmall glafs 
tube of about two feet in length, 
with a ball at one end of it of an inch and a quarter 
in diameter; I filled the ball and part of the tube 
with mercury; and keeping it with a Fahrenheit’s 
Thermometer, in water which was frequently ftir- 
red, it was brought exactly to the heat of 50 degrees; 
and the place where the mercury flood in the tube, 
which was about 6 ' inches above the ball, was care- 
fully 
