re 
Muriat of Potash. 235 
the whole appeared to explode at once. Equal 
parts of sulphur and the salt did not cause so strong 
reports as when a less quantity of sulphur was em- 
ployed: this mixture exploded successively. The 
sulphuric and nitrous acids inflamed it. 
EXPERIMENT V. WITH SULPHURET OF 
POTASH. 
One grain of the salt rubbed with the same weight 
of this substance produced a very loud explosion 
with flame. With half a grain of the sulphuret, I 
thought the report fully as violent. A little of these 
mixtures, melted over the fire, had not the effect of 
the fulminating powder made with nitre. It only 
emitted a flash without any report, nor was I able 
to produce a fulminating mixture by varying the 
proportions of the salt, alkali, and sulphur. The 
sulphuric or nitrous acids, dropped on this mixture, 
gave a very strong bright flame. 
EXPERIMENT VI. WITH SULPHURET OF 
MERCURY. (Cinabar.) 
Equal parts of this substance and of the salt deto- 
nated successively, by friction, a grain of each being 
used. A change of proportion appeared to weaken 
the detonating property of the mixture. The sul- 
phuric acid inflamed this mixture, but not so rapid- 
ly as in the last experiment. The nitrous acid did 
not inflame it, 
