404 Tin. 
first with a moderate fire, and for the last three hours the 
retort must be red-hot. 
In this process the mercurial muriat is decomposed, a 
portion of the tin rises highly oxy dated, and united to the 
muriatic acid in the form of the smoking muriat ; another 
portion remains behind, united with part of the sulphur 
into very beautiful aurum musivum, whilst the oxyd of 
mercury unites with another part of the sulphur into cin- 
nabar. 
The same experiment repeated by Pelletier, with equal 
parts of the two ingredients, gave the fuming muriat of 
tin, running mercury, and aurum musivum. 
Brugnatelli gives the following receipt. 
4. Precipitate a solution of nitrat of tin by liquid sub 
phuret of potash ; dry the precipitate, mix it with half its 
weight of sulphur, and a quarter of sal-ammoniac, and 
heat as usual. 
The following are some of the interesting experiments 
of Pelletier on this subject. 
5. A solution of 600 grains of tin was made in muriatic 
acid; to this were added 6C0 grains of sulphur, and the 
whole was evaporated to dryness. It was then reduced 
to powder and heated in the usual way, and gave a subli- 
mate of muriat of tin, mixed with a little sulphur, and the 
residue at the bottom of the vessel was very good aurum 
musivum. 
6. Equal parts of tin filings, sulphur, and sal-ammo- 
niac, were duly heated : the volatile products were hydro- 
sulphuret of ammonia, sulphuretted hydrogen gas, sul- 
phur, and some sal-ammoniac, and very fine aurum musk 
vum remained. 
7. Equal parts of black sulphuret of tin and muriat of 
ammonia were mixed anel heated. The residue was a 
black, iridescent, friable, puffy mass, very different from 
the simple sulphuret, and appeared to be oxyd of tin, 
