THE CHEMICAL CONSTITUTION OF NARCOTINE. 
663 
Calculated. Found. 
Water per cent. Water per cent. 
I. C 10 H 10 O 6 , HOi . . 3-83 3-97 
II. C 10 H 10 O 6 , H 2 0 . . 7-33 7-35 
III. C 10 H 10 O 6 , 2H 2 0 . . 13*74 13-83 
In the following Table the acids &c. are tabulated which have been and' probably 
may be prepared from opianic acid. 
Cio H 10 0 4 C 10 H 10 0 5 
1. Dimethyl-normeconin 2. Dimethyl-noropianic acid 
(ordinary meconin). (ordinary opianic acid). 
ClO Hio 06 
3, Dimethyl-norhemipinic acid 
(ordinary hemipinic acid). 
4. Methyl-normeconin. 5. Methyl-noropianic acid. 
c 9 h 8 o 6 
Methyl-norhemipinic acid, [ 
C 8 H 6 0 4 C 8 Hg 0 5 
Normeconin. Noropianic acid. 
Og H 6 0 6 
Norhemipinic acid. 
Cg H g 0 4 
6. Methyl-hypogallic acid. 
c 7 h 6 o 4 
7. Hypogallic acid. 
Of the above, the following have been made, namely : — 
1 and 3. C 10 H 10 0 4 and C 10 H 10 0 6 by the action of potash on opianic acid ; thus, 
2 C 10 H 10 O 5 =C 10 H 10 O 4 +C 10 H 10 0 ( 
4. C 9 H 8 0 4 by the action of hydrochloric and hydriodic acids on meconin ; thus, 
C 10 H 10 0 4 + H I=C 9 H 8 0 4 +C H 3 1. 
5. C 9 H 8 0 5 by the action of hydrochloric and hydriodic acids on opianic acid; thus, 
C 10 H 10 0 5 +H I=C 9 H 8 0 5 +C H 3 1. 
6. C 8 H 8 0 4 by the action of hydrochloric on hemipinic acid ; thus, 
C 10 H 10 Og+H C1=C 8 Hg 0 4 + C H 3 Cl+C 0 2 . 
7. C 7 Hg 0 4 by the action of hydriodic acid on hemipinic acid ; thus, 
C 10 H 10 Og+2H I=C 7 Hg 0 4 + C 0 2 +2C H 3 1. 
5. Action of Hydrochloric and Hydriodic Acids on Narcotine. 
When narcotine is treated with strong hydrochloric acid for some time on a water- 
bath, in a flask under a layer of paraffin, a thick oily mass gradually separates out on 
cooling, which on examination was found to be the chloride of a new base. The best 
method of preparing this base is as follows : — 
200 grms. narcotine are put into a large flask with 1000 cub. centims. strong hydro- 
chloric acid (the pure commercial acid), and are digested together on a water-batli 
