on the Compojltwn of Jameses PowJe'f, 33^ 
evaporated to drynefs, left a little more than four grains of an 
infufible kind of fediment, which was calx of antimony, like 
that of N° 3. and 4. with a minute portion of Algaroth powder 
and iron. 
The 60,1 grains, p. 337. which refilled folution in marine 
acid, were a lighted powder than James’s Powder itfelf, 
rather gritty, quite taHelefs. This powder was digefled in 
one-ounce meafure of concentrated nitrous acid mixed 
with two of acid of fait for a week 5 and then this mixture 
Was 'diluted with four ounces of diflilled water, and gently 
boiled till it was reduced to about two ounce-meafures. On 
cooling and Handing feveral days, a fediment of the fame 
kind apparently, and in the fame quantity as before evapo* 
ration, was depofited, and, after Handing, a clear yellow liquid 
was drawn off. The fediment, well dried, weighed 55 grains 0 
The decanted liqUor being reduced by evaporation from one 
and a half ounce to about 4wo drachm-meafures, a fediment* 
while hot, appeared, which was calx of antimony, with a 
minute portion of earthy matter that had fome properties of 
phofphorated lime and calx of iron. A little of the clear 
liquor on this fediment being dropped into water produced no 
milkinefs, nor fediment, after Handing ; but the whole of this 
clear liquor, with fediment, being evaporated to drynefs, af- 
forded four grains of the fame kind of infufible calx of anti- 
mony* mentioned to have been obtained from the acid liquors, 
N° 3. and 4* above mentioned. 
It appears then, that by repeatedly digefling and boiling in 
marine acid, and in aqua regia , that part of James’s Powder 
which refifled folution in nitrous acid, which was 444 -’ P* 335 s 
77 grains were carried off by theie menffrua ; but conndering 
the fmall proportion contained in thefe acids after the two firff 
Y y 2 affufions* 
