C 2 9 ] 
matter with fome of the acid of the falts which 
thefe waters contain, and thus forming a fulphureous 
vapour which is volatile while they remain flightly 
united, but which by a more intimate union would 
form a real fixed fulphur. From Dr. Wood’s ac- 
count of this water, it is evident that this fetid va- 
pour, or at lead. the principles which form it, are 
volatile j for, he fays, the water keeps much better 
in open than in corked bottles.. 
Each drop of a folution of the foflil as well as of 
the vegetable alkali occafioned a thick white cloud,, 
that fell to the bottom of the glafs. And each' 
drop of a folution of filver in the nitrous acid gave 
a milky cloud. Syrup of violets became green, and 
an infufion of galls occafioned no particular change: 
of colour. 
A hundred and two ounces, three drachms and a? 
fcruple (or lib. vi. unc. vi, dr. 3. fcrup. 1.) were- 
put into a large done bafon,,. and feton a fand heat to* 
evaporate with a flow fire. 
As foon as the water was warm, it let drop a light* 
dark coloured earth, which gathered" in fmall. heaps 
at- the bottom of the bafon 5 and during this time,, 
the water threw up fome air bubbles to its furface;, 
when it was evaporated to about a pint (lib. i.) it was 
taken off the fire, and filtrated through paper : the cof- 
fin through which it paffed,. after being dryed, was 
found to have acquired 21- grains of additional weight ; . 
though I could not colledt more than 3 gr. of a done 
grey coloured earth, which proved to be of theabfor- 
bent or calcarious kind, for it effervefced with and di£~ 
folved in the vitriolic acid; the remaining additional 
weight of the coffin, I believe, depended on fome of 
7 : thee 
