the Carinthian Molybdate of Lead. 299 
dissolve all of the saline part ; but as the solution was turbid, 
it was poured on a filter, which collected a precipitate of a pale 
bluish-grey colour. 
B. This precipitate after it had been edulcorated was boiled’ 
with distilled water, which was afterwards filtrated. 
1. Prussiate of pot-ash precipitated some iron. 
2. Muriatic acid was added to another portion, after which 
the prussiate produced a brown precipitate of molybdaena. 
3. Muriate of silver was precipitated when nitrate of silver 
was dropped in. 
C. I then boiled lixivium of carbonate of pot~ash on the 
undissolved part of the residuum, by which the greatest part 
was dissolved. The alkali was then saturated with muriatic 
acid, and prussiate of pot-ash being added, precipitated some 
molybdaena. 
On the small portion of the residuum which remained I 
poured diluted nitric acid. The solution was then filtrated, 
and I obtained a small quantity of sulphate of lead by the 
means of sulphuric acid. 
These experiments shew that the residuum was composed 
of molybdic acid, iron, lead, and a small quantity of muriatic 
acid, which was produced from the muriate of ammoniac dur- 
ing the sublimation. 
D. I now took the solution A and divided it into two por- 
tions, to one of which I added three ounces of concentrated 
sulphuric acid, and evaporated the liquor to half of the quan- 
tity. 
When it was cold it deposited a white saline matter, which 
for the greater part dissolved in water, leaving a small resi- 
duum which appeared to be muriate of lead. 
