CRYSTALLINE CONSTITUENTS OF OPIUM. 371 
10-995 +... carbonie acid, aa 
5.690 grains of apophyllic acid, dried at 212°, gave 
I 
1990 ... water. 


5'185 grains of apophyllic acid gave 
e TI. ¢ 10:055 ~~... carbonic acid, and 
1915  .... water. 
3°983 grains of apophyllic acid gave 
4-675... __ platinochloride of ammonium. 
Experiment. Calculation. 
_——— SSS 
I. Il. 
Carbon, -  . +5270 52-88 SOS Ch) 96 
Hydrogen, ; 3°88 4:12 3°86 H, 7 
Nitrogen, : 7:37 AA 7-73 N 14 
Oxygen, : 36:05 are 35°37 0 64 
100-00 100-00 181 
The formula of the acid is, therefore, C,, H, NO,, and this has been confirmed 
by the analysis of its silver salt, to be given below. Its derivation from cotarnine 
cannot be distinctly understood, and is attended by the formation of several other 
substances which I have not examined. If we compare its formula with that of 
cotarnine, however, we shall see that if we add to the latter two equivalents of 
oxygen, and subtract from it the formula of apophyllic acid, the difference is 
C,, H,- 
Cotarnine +2eq.0, . < 3 : C,, H,, NO, 
Apophyllic acid, . : : c : C,,H, NO, 
C,H, 
I have, however, been unable to determine whether this group of atoms passes 
into any particular form of combination, or whether it be entirely oxidised into 
_ carbonic acid and water, which I suspect it is. 
E Apophyllic acid differs from anthranilic acid by the elements of two equiva- 
- Ients of carbonic acid. 

Apophyllic acid, . ; é 5 : C,, H, NO, 
2 eq. carbonic acid, J 2 h 
ei * Anthranitic acid, a 5 3 : C,, H, NO, 
According to Woutzr, when apophyllic acid is distilled, it gives a quantity of 
chinoline. From our knowledge of its constitution, however, we should rather 
anticipate the production of aniline, or, at least, of an isomeric of it, particularly 
_ if distilled with exces of lime or baryta, thus :— 
C,, H, NO,—4 CO,=C,, H, N. 
By distillation I obtained a small quantity of an oily base with a somewhat 
aromatic odour ; but it did not give the reaction of aniline with chloride of lime, 
VOL. XX. PART III. 5H 

