106 
RESEARCHES ON THE AMONIACAL COMPOUNDS. 
and there is given off calomel, metallic mercury, ammonia, 
azote, and a trace of water. 
The processes for analysing this body were the same as for 
white precipitate ; it will be sufficient, therefore, to indicate 
each process and their results without entering into details. 
From its mode of preparation was derived the following re- 
sults : 
Hg 88.91 
CI 7.95 
Other matters 3.14 
100.00 
By protochloride of tin, 
Hg 88.18 
By hydrochloric acid and sulphuretted hydrogen 
Hg 87.90 
By iodide of potassium, 
NH 3 3.36 
The mean of these experiments give 
Hg 88.33 
CI 7.95 
NH 3 3.36 
Loss, &c. .36 
100.00 
This body then is analogous to white precipitate, the mer- 
cury being in proto-combination, and we may construct two 
formulae for its composition, according as we consider ammo- 
nia or amidogen as one of its elements. The same reasons to 
guide our choice will apply equally to this body as to white 
precipitate. Under the former view there will be 
Cl.Hg+HgO.NH 3 
Under the latter, 
Cl.Hg+HgNH 2 
