
CRYSTALLINE CONSTITUENTS OF OPIUM. 375 
I have placed these results in juxtaposition with the calculated numbers of 
ethylamine for the purpose of shewing that it consisted of a mixture of the pla- 
tinum salts of that base and of methylamine. The presence of the latter base was 
also determined, in this case, by dissolving the salt in water and twice crystallising, 
when the small quantity obtained gave 40°32 per cent. of platinum, indicating 
that in this way a separation of the two might have been effected if the quantity 
of material had been sufficiently large to admit of additional crystallisations. 
Some observations lead me to suppose that these are not the only bases formed, 
but that others with much higher atomic weights are occasionally produced. A 
serious difficulty, however, in the way of such investigations, is found in the de- 
compositions which all these bases undergo in contact with nitrous acid, to which 
they are exposed during the action of nitric acid upon the original substance. I 
propose, however, to pursue the subject further, and hope to find a means of avoid- 
ing this difficulty. 
I shall conclude this paper with a tabular statement of the substances ex- 
amined in it, and their formule. 
Narceine, . : Cag NO 
Hydrochlorate of narceine, . C,, H,, NO,, HCl 
Platinochloride of narceine, C,, H,, NO,, HCl Pt Cl, 
Rosiquet’s narceine, . C,, H,, NO,, (2) 
Thebaine, . ‘ 2 a C,, H,, NO, 
Hydrochloride of thebaine, . _ C,, H,, NO, HCl+2 HO 
Platinochloride of thebaine, C,, H,,NO, HCl Pt Cl, +2 HO 
Teropiammon, Cop He NOS. 
Opianyl, Cy Hy O, 
Hydrate of Opianyl, C,, H,, 0,+HO 
Opianic acid, Cy) Hy) O15 
Opianic ether, C,H, 0 C,, H, 0, 
Hemipinic acid, . 3 : ; “ ° : C,, Hyy O12 
Acid hemipinate of potass, . : ‘ : ; KO HO C,, H, 0,, 
Hemipinate of silver, . é . : 4 . 2 Ag O C,, H, O,, 
Hemipinovinic acid, . c : : - : HOI FAO, ve Oy, 
Apophyllic acid, : : ’ : : é C,, H, NO, 
Apophyllate of silver, ; - ; : : AgO C,, H, NO, 
Methylamine, . 3 : : é : : C, H, N 
Ethylamine, : : ‘ : : : : C,H,N 
VOL. XX. PART III. Orr 
