[ 220 3 
This water had a fmart chalybeate tafte, fome- 
what refembling Spa water j with a flight flavour of 
the fermenting liquor. 
One drop of tindlure of galls gave a rofy purple 
colour to a wine-pint of this water. 
Syrup of violets turned it green 
Soap leys, or even alcaline falts, either fixed or vo- 
latile in their natural flates, foon changed this liquor . 
green, and rendered it turbid, whence a yellow fedi- 
ment enfued. 
But neither of the alcaline falts, when previoufly 
faturated -with fixed air, produced any perceptible 
alteration. 
Nor did any vlfible change happen on the addition 
of acids. 
The thirty ounces of water, in the fiafks before 
mentioned, after being boiled twenty minutes, to ex- 
pel the air, became very turbid, and let fall fedi- 
ments. The clear liquor being decanted, the re- 
mainder was pafTed through a filter, and, after dry- 
ing, the paper appeared to have gained two grains 
and a quarter. 
This ochrous refiduum could not be again dif- 
folved in water, by means of fixed air; but was fo- 
luble in the vitriolic acid. The folution, diluted and 
filtered, received no colour from galls, until alcali 
was added to faturate the redundant acid ; after which, 
it flruck a purple, as in common folutions of iron. 
* Simple’ diftillcd water, faturated with fixed air, by any. 
means I have tried, makes no change in fyrup of violets ; and,, 
when mixed with foap, does not curdle.. 
The 
