[ 53 ° ] 
from the extreme great acidity of the fumes of fpirit 
of fait, that iEther might be made by faturating 
rectified fpirits of wine with them ; and on trial I 
found it anfwer, though not in a large quantity. 
The fpirit of wine, charged with the acid va- 
pours, mull: be diddled and cohahated, and then 
rectified with a flow degree of lire *. 
The method that Monf. Beaume of Paris pro- 
poled to make this iEther, and which did not luc- 
ceed with him on account of his not being able to 
condenfe the fumes, anfwered well with me; and 
it confifts of combining the vapours of fpirit of lalt 
with thofe of fpirit of wine. The apparatus that I 
made ufe of for this purpofe is defcribed at fig. 4, 
and the procefs is as follows: 
Eight pound of fea lalt was put into the retort B, 
and two quarts of rectified fpirit of wine into the 
retort D; three pints of the fame fpirits of wine 
were put into each of the glafs veflels I and K, in 
‘order to condenfe the fumes, one not being fuffi- 
cient; all being well luted and fecured, the fpirits 
of wine in D were made to boil, and then yVa of 
oil of vitriol was poured on the lalt in the retort B, 
at ten or twelve different times, feven minutes be- 
tween each time, led the mixture (liquid boil over; 
then a fire was made under this retort, and both 
tires kept up till the operation was over. The quan- 
tity of liquor in the veffels I and K, increafes con- 
fiderably from the vapours that condenfe therein ; and 
the veffel I in particular grows very hot, and being 
* As 1 have fhewn before, that the vapours of the acid of 
fait, which condenfe in water, are free from the acid of ritiiol, 
vvt may be certain, that the acid of vitriol did not cor.tiioutc to 
form this /Ether. 
