156 Miscellaneous Intelligence. 
and the liquid, which was found to contain copper, after some time 
deposited a bluish-green powder, which behaved like a true com- 
bination of oxide of copper with the acid of the fulminating silver, 
containing copper in place of silver. The compound detonated 
more feebly than that of silver, and was difficultly soluble in boil- 
ing water ; on evaporating the mother liquor, a large quantity of 
fulminating copper was obtained. Zine gave similar results, but 
mrretrerterdn Iron also produced a crystallized fulminating com- 
ound, 
! When fulminating mercury was acted on by the metals, similar 
phenomena were produced; and fulminating copper and fulmina- 
ting mercury were thus obtained. 
When fulminating silver was boiled with magnesia, the liquid 
was found to contain but very little of the acid, but a reddish pre- 
cipitate had formed, which, though it contained the greater part of 
the fulminating mercury, merely decrepitated feebly when thrown 
upon ahotcoal. Half an ounce of it heated in a retort, decomposed 
quietly, yielding a portion of carbonate of ammonia and water, and 
carbonic acid gas, no other gas being liberated. In order, there- 
fore, to obtain a knowledge of the constituents of fulminating sil- 
ver, 100 parts were well mixed with 400 parts of calcined mag- 
nesia, and heated in a luted retort, the products being carefully 
received and estimated. They were, 
With fulminating silver With fulminating mercury 
Carbonic acid . . 35°5 
Ammonia ty ss era Zips ay eed OF 
Welter uy hiy erro! Valet apes 
Silver . . . . 41°0 . Mercury 56:9 
Deas bs are eee ai wines ee 
100° 100- 
These being the mean of four experiments on each compound. 
The only substance which varied was the carbonic acid, and the 
proportions of the other substances remained constant. These gave 
as the ultimate elements, 
Fulminating silver Fulminating mercury 
Oxygen . . -» 32°22... . ~ 23°39 
Hydrogen. | s . BH2D wa VY BeBe 
Witrogen’ 145.) 4, SVE 2B A 4 Paes Gees 
Carbon.) 3 0a SRG8 isis ee Be A 
Silver . . . 41:00 . Mercury 56°90 
The following are some of the compounds of the acid of fulmi- 
nating silver with bases. —Magnesia combines in two proportions 
with the acid: one is a rose-coloured powder, not soluble or deto- 
nating, but merely decrepitating by heat; the other is in beautiful 
white filamentous crystals, resembling capillary silyer, and 
