352 On the Compressibility of Water. 
e experiment with this instrument was made at Mr. 
Krer’s manufactory, in the présence of many scientific gen- 
tlemen. The seer nk being perfectly filled with water, 
three hundred and twenty-six atmospheres. When it was 
taken out and weighed, there was found an increase of water 
of es degrees, and kept at the same temperature 
during the experiment. 
A Gaching calculated to avoid loss of pressure from de- 
struction of the materials of which it is composed, will be 
made with all convenient speed. This machine, being con- 
structed with metallic stuffings and flexible metallic pistons, 
will effect a much greater pressure than the hydraulic press, 
the ak of —- is limited by the animal stuffing now 
. Itisp e, a pressure of from two to three thou- 
A leres may: bec obtemed, before the metallic pis- 
Apeselanety 
Iti is expected that this machine will: be voibibanaly accu- 
rate to give the exact ratio of the compressibility of water 
with much greater precision than has hitherto been obt 
but the results of farther oo one must be the subject a 
a future gti ation. 
ae ie n Friars, Jane 6, thoes 
be done, in : eid t and precis- 
would b fae to attain. ‘The exact degree of condensation 
hy a given pressure, and the law ig Phe aelpaee a aes 
