on the Haloid Compounds of Mercury. 44:7 
or in 100 parts— 
Mercury 83,48) 
Oxygen 6,59 
Ammonia 3,86 
Water and loss 6,07 J 
a result almost identical with the former. 
B.—52,22 grains were dissolved in muriatic acid and decomposed by chloride of 
tin. There were obtained 43,74 of mercury corresponding to 83,76 per cent. 
C.—As the constancy of the amount of mercury and ammonia in the preceding 
results, proved completely that the loss did not arise from error, but probably from 
water present, the following experiment was made to ascertain whether water ex- 
isted in such quantity: A small green-glass retort was blown, with a pretty long 
neck ; to it was attached a tube containing potash ; and the ammoniuret in the retort 
having been decomposed by a red heat, its gaseous elements were allowed to escape, 
the mercury condensed in the neck of the retort and the water in the potash-tube ; the 
result, though not absolutely true, is sufficiently accurate for the determination of the 
point required. 
Weighth of retort and material - - 75,38 
Weight of retort - = = - 63,00 
Ammoniuret used 12,38 grains 
Weight of retort and mercury-residue - 73,35 
Weight of retort - a = = 63,00 
Mercury remaining 10,35 
Weight of potash-tube before = - 278,28 
Weight of potash-tube after = - 278,95 
Water absorbed - 0,67 
We thus obtain as results— 
Mercury 10,35 = 83,62 
Water 367 = 5,39 
Gases and loss 1,36 = 10,99 
But the gases consist of oxygen and ammonia, the former being such as to perox- 
idize the mercury; and assuming the remainder to be ammonia without loss, we 
have, 
Mercury “6.60 | 
Oxygen 6,60 
renee 4,39 100,00 
Water 5,39 J 
These results summed up, give— 
Process. Mercury. Oxygen. Ammonia. Water. 
A, No.1. 83,90 6,63 4,07 5,40 
— No.2. 83,48 6,59 3,86 6,07 
B 83,76 6,60 
€ 83,62 6,60 4,39 5,39 
VOL. XVII. 41 
