C 472 ] 
conclude this water to be but flightiy impregnated 
with either a chalybeate or vitriolic principle ; with 
which laft it is, however, afluredly ftrongly faturated, 
altho’ the ordinary tafte with galls does not difcover 
it clearly by the blue tin&ure, until the difiolving 
acid is partly exhaled. 
The Analysis. 
It depofits an ochre, which ferves for painting. 
It alfo depofits in the bottles a fediment* partly of 
a red and yellowifh colour, and partly white and 
raggy ; which fparkled, and fmelt ftrong, on the red 
hot iron. 
Two pounds eleven ounces yielded 16 grains (/. e. 
a gallon 4.9 grains) of a light green fediment, of an 
acid fmell, and of an highly acid, vitriolic, and nau- 
feous tafte. 
It ferments ftrongly, both with folution of pot- 
afhes, and with fpirit of fal ammoniac; and feparates 
a green and ochreous matter with the laft. 
Galls added to its dilutum in diftilled water turned 
it of a deep blue ; the charadteriftic of martial vitriol, 
to which it alfo agrees in the experiments of the laft 
paragraph. 
It produced fome degree of coagulation with albu- 
men ovi ; and fome flight opacity, and fmall grumes, 
with faliva. 
It turned of a brown greenifh colour with fyrup 
of violets. 
It was not attra&ed by the magnet, until roafted 
in the crucible ; and then it was ftrongly attradted, 
and turned as red as minium. 
F rom 
