Memoir on Sulphuric Ether. A73 
by Dr. Ure as mentioned above, the results 
of which fall in as well as can be desired 
with those from water, in establishing a ge- 
neral law that the vapours of homogeneous 
liquids expand in geometrical progression to 
equal intervals, or at least to the same inter- 
yals of temperature. I may add, my own 
experiments recently made for the first time, 
corroborate those of Dr. Ure in the interval 
of temperature from 175° to 212°.* 
The following skeleton of a table of the 
force of vapour from water, alcohol and ether, 
is formed from what I consider as the most 
correct experiments hitherto made on these 
subjects, and may have its use, though it. will 
be found not to differ very materially from 
my former tables, except where they differ 
from each other. 
* Philosophical Transactions. —1818. 
VOL. Iii. 000 
