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cremor always fucceeded, until the whole quantity, 
which the water contained, was exhaufted. 
13. When this cremor firft appeared on the wa- 
ter, it was of a faint blueifh colour : but as it in- 
creafed, it changed into a deeper and more bright 
fhining blue : and, after longer handing, it became 
blotched with various colours, as red, orange, yel- 
low, green, blue, purple, and violet. 
14. A quantity of the water being put in a 
gentle heat, this cremor was quickly feparated from 
it, and appeared on the furface of the water. A 
like quantity of the water, with its cremor already up- 
on its furface, was put over a gentle heat, which by 
degrees broke the cremor into very fmall parts j but 
whether they did evaporate, or precipitate in the wa- 
ter, I could not be certain. But, by other trials, 
this cremor was found to have a great degree of 
fixity, bearing a confiderable heat without avolation ; 
yet not without the appearance of fome of its parts 
flying off, altho’ moft of them were fixed ; becaufe 
what remained loft its fine colours, and was changed 
into a fhining chalybeat colour. 
15. The water of the lower fpring afforded a 
much lefs quantity of the cremor, than the water of 
the upper fpring. It took alfo a longer time to fe- 
parate, was of a blueifh colour, and had not the 
vivid colours, which the water of the upper fpring 
fhewed. 
16. When ol. tart. p. d. and fpirit of fal ammo- 
niac were added to the water, it did not feparate its 
cremor. 
T! fls cremor, which is feparated from the water, 
is the fame with that, which appears on the furface of 
Vol. 50. S a folu- 
