364 DR ANDERSON’S RESEARCHES ON SOME OF THE 
5-590 grains of opianyl, dried at 212°, gave 
I. { 12°605  ... _—_ carbonie acid, and 
2680  ... water. 
{ 5:895 grains of opianyl gave 
Il. ¢ 13°350  ... carbonic acid, and 
| 2:885 ... water. 
13:307  ...  earbonic acid, and . 
5°886 grains of opianyl gave 
III. 
DiiGOw, «x hi waters 



ig 10k III. 
Carbon, . é : 61:49 61:76 61-65 
Hydrogen, ; . 5°32 5:43 5-21 
Oxygen, . : ; 33°19 32°81 33°14 
100-00 100-00 100-00 
These results correspond exactly with the formula C,, H,, O,, as is obvious from 
the following comparison of the calculated numbers with the experimental mean :— 


Mean. Calculation. 
Carbon, 5 : 61:63 61-85 c,, 120 
Hydrogen, . : 5°32 5°15 Hy 10 
Oxygen, ; 2 33°05 33°00 OF 64 
100-00 100-°00 194 
Opianyl thus bears a very interesting relation to opianic and hemipinic acids, 
provided we assume for the former the formula as corrected by Berzetius, and, 
for the latter, an atomic weight twice as high as that assigned to it by WoHLER, 
both of which assumptions are consistent with analyses which will be detailed in 
the sequel. The three substances then stand as follows :— 
Opianyl, : : : 3 é C 
Opianie acid, : 3 : ; . C 
Hemipinie acid, C 
and appear as three successive degrees of oxidation of the same radical. I have 
not attempted to convert opianyl into opianic acid by oxidation, as the quantity 
at my disposal was not sufficiently large to admit of an accurate experiment, but 
no reasonable doubt can be entertained on that subject. 
The derivation of opianyl from narcotine is abundantly simple. Two equiva- 
lents of hydrogen are oxidised by the nitric acid, and the narcotine splits up inte 
opianyl and cotarnine, as is expressed in the following scheme :— 
1 eq. of narcotine : 5 : ; Ce, NOW 
2 eq. of oxygen, O 
2 
C,, H,; NO,, 

