THE ALKALOID FROM PITURIE. 131 
The average of these eight analyses is— 
arbon 
Hydrogen . 
Nitrogen 14°94 
And the relative proportions when calculated in the usual way 
are— 
Carbon 5°98 
Hydrogen 7°96 
Nitrogen 1:00 
or very nearly 6:8:1. - 
The formula would therefore be C;H.N, which requires— 
Theory. Found. 
Cy = 
Hs = 
76°59 per cent. 76°56 per cent. 
N 8°51 is 8°48 ” 
14°90 
I ll tt 
* 14°94 =, 
94 100-00 99°98 
To confirm this formula a platinum double salt was prepared in 
the manner. The crystals so obtained were orange 
To ensure onaiblé uniformity of composition, the 
platinum salts were always pre from the same portion of 
alkaloid with solution of platinic chloride, and as 
S cent. to 38°40 per cent. ; seven y 
Yielded between 35-35 and 35°55 per cent. Pt. Nine determina- 
Hons of chlorine and they varied from 31°32 to 
36°86 per ce 
ti The platinum salt is therefore clearly not of uniform composi- 
"0 or else very unstable ; it undergoes decomposition with loss 
of ees a , by adding an excess 
hy “te *d solution of mercuric-chloride to a solution of the 
Ydrochloride of the alkaloid, crystallized well in rhombic plates 
M 
