CRYSTALLINE CONSTITUENTS OF OPIUM. 351 


PELLETIER, COUERBE. 
coCS‘FjKeET—-—_oa~ 
Carbon, . . 54:02 56°42 56:00 
Hydrogen, ‘ 6:52 6°66 6°62 
Nitrogen, ' 4:33 4-76 a 
Oxygen, . a 35:13 32°16 
100-00 100-00 
From which Pentetier has deduced the formula C,, H,, NO,,, and CourrBe 
that of C,, H,, NO,,, of which the respective calculations are given below. 


PELLETIER’s Formula. CovERBE’s Formula. 
Carbon, Z : 53°63 56°37 
Hydrogen, . : 6-70 6-71 
Nitrogen, . a 3°91 4-69 
Oxygen, : 35°76 32-23 
100-00 100-00 
CoverBE’s formula agrees extremely well with his analytical results, but it, 
as well as PELLETIER’s, is entirely unsupported by determination of the atomic 
weight, which neither of them seem to have attempted, owing to the impression 
they derived from their experiments, that narceine does not possess basic proper- 
ties, an opinion which I have found to be altogether incorrect. 
Ill. Analysis of Narceine. — 
The analysis of narceine was made upon a quantity which had been purified 
by repeated solution both in water and alcohol, and which was absolutely white. 
_ It loses its water with great difficulty at 212°, and it is most convenient to dry it 
at 230°. 





4-632 grains of narceine gave 
I 10:130 ... carbonic acid, and 
2660 ... water. 
4-861 grains of narceine gave 
II. {10-522  ... carbonic acid, and 
2824 ... water. 
5-650 grains of narceine gave 
2790  ...  platinochloride of ammonium. 
7-236 grains of narceine gave 
3845  ... _ platinochloride of ammonium. 
Experiment. , Calculation. 
oe ET TT TT a ee ee 
é I. II. : 
Carbon, . : 59°64 59-03 59-63 Cy, 276 
Hydrogen, : 6:38 6:45 6-28 H,, 29 
Nitrogen, - 3:10 3°30 3:02 N 14 
Oxygen, . . 30°88 31:22 31:09 OF 144 
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VOL. XX. PART Ill. 5c 
