179 
of Edinburgh^ Session 1863-64. 
I. 
II. 
III. 
Theory. 
Carbon, 
23-52 
23-33 
Hydrogen, 
2-40 
2-35 
Phosphorus, 
Chlorine, 
... 
Nitrogen, 
... 
... 
Platinum, 
32-23 
32-73 
31-98 
The platinum in the third column was estimated by direct igiii* 
tion, the high result obtained was probably owing to the formation 
of a little phosphide of platinum. 
The analysis corresponds with the following formula : — 
Ci 3 P"' N 3 3HCl+3PtCl2 
Zincochloride of Hydrochloric acid was added 
to a portion of the solution of the hydrochlorate in water, and then 
some fragments of pure zinc were thrown in. After the zinc had 
dissolved the fluid was evaporated at a gentle heat (about 200° 
Fahr.), and filtered from a few greenish flakes which had formed, 
as even that low temperature appears to decompose the salt. The 
clear fluid was then put over sulphuric acid and left for some days, 
when crystals of a zinc salt were obtained, but under the same 
conditions as the hydrochlorate, as the solution was very concen- 
trated before the salt appeared, and then it solidified completely. 
The crystals were pressed between folds of filter paper, and washed 
with a mixture of alcohol and ether, and dried in vacuo over strong 
sulphuric acid. They were white needles, slightly deliquescent, 
and soluble in alcohol. In ether it does not dissolve, but it 
becomes liquid, having the same appearance as a drop of oil in 
water. 
The chlorine only was estimated, the analysis gave— 
I. 
Theory. 
Chlorine, . 
34-57 
34-23 
which agrees with the following formula 
2 (G,s V"' N3 3HC1) 3Zn" Cl^ 
Bromine water immediately precipitates a brownish-coloured 
substance from an aqueous solution of the hydrochlorate. This 
precipitate was washed with water, and a portion of it boiled for 
some time, and found to be insoluble in water ; but a substance 
appeared to have volatilized along with the vapour of the water, as 
