448 Memoir on Sulphuric Ether. 
perties of ether, but this was too small to be 
much regarded.—In an excursion to Edin- 
burgh and Glasgow in 1807, I exhibited the 
steam of ether as above described, to a few 
persons in those two places; when at the 
latter place, Dr. Ure was so good as to sup- 
ply me with ether, but upon trial it did not 
present. the properties I had usually recog- 
nized, which at the time I attributed to ac- 
cidental impurities, acquired in the labo- 
ratory ; upon this he accompanied me to a 
druggist, where I was immediately supplied 
with ether of the requisite purity. I appre- 
hend Dr. Ure’s ether must have been the 
spiritus etheris sulphurici of the Edinburgh 
college, made by adding 2 parts alcohol to 
1 of ether; or perhaps ether not rectified. 
Tn 1808 I published the first part of my 
New System of Chemical Philosophy, in 
which I digested all the knowledge I then 
had on the force of steam from ether in a ta- 
balar form. I had acquired from actual ob- 
servation, the forces in a range of tempera- 
ture from 0° to 212°. In my former publi- 
cation I had concluded that the variations in 
the force of steam from water and ether were 
the same for the same intervals of tempe- 
rature; that is, if the force of steam from 
water was diminished from 30 to 15 inches of 
yw 
