Combinations of different Metals and Chlorine. igg 
aurum musivum, prepared by the decomposition of stannane 
with sulphur, no more gas was produced than the expansion 
by heat occasioned, sulphur sublimed, and a gray sulphuret 
of tin remained. These results I have several times obtained, 
and not only with aurum musivum prepared as the preceding, 
but with some also made according to Woulfe’s process. As 
no sulphureous acid gas was produced, and as sulphur sub- 
limed, it may be concluded that aurum musivum differs merely 
from the gray sulphuret in containing a larger quantity of 
sulphur. My next object was to ascertain the exact propor- 
tion of sulphur in both these sulphurets, for the sake of com- 
parison with the combinations of tin and chlorine. 
100 grains of tin in a finely divided state, as precipitated 
from the muriat of this metal by zinc, were heated in a glass 
tube intimately mixed with sulphur, the combination of the 
two was accompanied with vivid ignition, the sulphuret formed 
weighed 127.3 grains, and broken, it appeared perfectly ho- 
mogeneous; it was pounded, and again heated with sulphur; 
but the excess of sulphur being expelled, the fused sulphuret 
had not increased in weight. The second time I made this 
experiment, I obtained the same result. 
50 grains of aurum musivum, purified from mixed sulphur 
by exposure in a close vessel to a dull red heat, were decom- 
posed by a bright red heat in a small green glass tube nicely 
weighed, and having only a very small orifice; the loss of 
sulphur, by conversion into the gray sulphuret, was equal to 
g.j grains. H cnee, as 40.7 grains of gray sulphuret contain 
8.72 grains of sulphur, 50 grains of aurum musivum appear 
to contain 18.02 grains. 
The ratio 111 which sulphur combines with bodies is to that 
