combinations of Oxymuriatic Gas and Oxygene, &c„ 23 
means of a spirit lamp, and after cooling, the results were 
examined, and the residual gas analysed. 
All the metals that I tried, except silver, lead, nickel, cobalt, 
and gold, when heated, burnt in the oxymuriatic gas, and the 
volatile metals with flame. Arsenic, antimony, tellurium and 
zinc with a white flame, mercury with a red flame. Tin be- 
came ignited to whiteness, and iron and copper to redness ; 
tungsten and manganese to dull redness ; platina was scarcely 
acted upon at the heat of fusion of the glass. 
The product from arsenic was butter of arsenic ; a dense, 
limpid, highly volatile fluid, a non-conductor of electricity, 
and of high specific gravity, and which when decomposed by 
water, gave oxide of arsenic and muriatic acid. That from 
antimony, was butter of antimony, an easily fusible and vola- 
tile solid, of the colour of horn-silver, of great density, crys- 
tallizing on cooling in hexahedral plates, and giving, by its 
decomposition by water, white oxide. 
The product from tellurium, in its sensible qualities, re- 
sembled that from antimony, and gave when acted on by 
water white oxide. 
The product from mercury was corrosive sublimate. That 
from zinc was similar in colour to that from antimony, but 
was much less volatile. 
The combination of oxymuriatic gas and iron, was of a 
bright brown; but having a lustre approaching to the me- 
tallic, and was iridescent like the Elba iron ore. It volatilized 
at a moderate heat, filling the vessel with beautiful minute 
crystals of extraordinary splendour, and collecting in brilliant 
plates, the form of which I could not determine. When acted 
on by water, it gave red muriate of iron. 
