C * ] 
berg, and Stahl, upon this Subjed, to receive any 
Information from me. 
Permit me only to fay, it was Dr. Stahl’s Method 
of procuring the volatile Acid of Sulphur, that put 
me upon the Thought and Endeavour of doing the 
fame Thing in a better Manner : And, indeed, I 
look upon my Method to be no more than an Im- 
provement of his ; and this will appear by the Pro- 
cefs which follows: Tho’ I have Two Ways of ob- 
taining the Spirit of Sulphur; one by the means of 
fixed Alkali Salt ; and the other by means of the fame 
Salt and Quick-lime. 
Process I. 
To make the -volatile Spirit of Sulphur with 
Alkali Salt per fe. 
Take a Pound of the Flowers of Brimftone, and 
Five Pounds of dry fixed Alkali Salt ; grind them 
together, and put the Mixture into an Iron Pot ; add, 
by degrees, a little Water, fo as firft to diffolve the 
fixed Alkali ; then gradually difpofe the Whole to boil, 
in order the better to diffolve the Sulphur: When 
thefe have boiled for a Quarter of an Hour, add more 
Water by degrees ; and, when the Sulphur appears to 
be diffolved, fibre the Solution ; evaporate it to pci- 
fed Drinefs in an Iron Pot, till it almoft begins to 
melt ; then take out the dry Powder when cool put 
it into a tubulated Retort; which being placed in a 
Sand-heat, and a Receiver luted on, pour in at the 
Tube, by degrees, Two Pounds of redified Oil of 
Vitriol ; and immediately fecure the Tube with a Stop- 
ple of Chalk, and Luting: Then give a gradual Fire 
for fome Hours, till all the volatile Spirit of Sulphur 
3 is 
