of the Organic Alkaloids. 58 



Expt. Calc. 



Carbon, 



56-49 



5666 



% 



204 



Hydrogen, 



6-16 



611 



H 22 



22 



Nitrogen, 



... 



3-88 



N 



14 



Oxygen, 



... 



24-47 



o„ 



88 



Sulphur, 



8-74 



8-88 



s a 



32 



10000 100-00 360 



These results show that the salt dried at this temperature re- 

 tains water, and has the composition. 



C 34 H 19 N0 6 ,HO,S 2 2 + 2HO. 

 The crystals contain, in addition, two atoms of water,- 



J 5"08 grains, crystallized salt, lost at 212°, 

 \0-25 ... water. 



equal to 4*92 per cent., and 4*76 is required by this deduction 

 of 2 aq. from the formula, 



C 34 H 19 N0 6 , HO,S 2 2 + 4HO. 

 Hyposulphite of Codeine. — This salt is readily procured by 

 digesting the pure base with sulphide of ammonium. The 

 fluid is evaporated to dryness after twenty-four hours, and the 

 residue redissolved in a small quantity of hot water. The new 

 salt then separates on cooling in rhombic prisms with dihe- 

 dral summits ; from dilute fluids these crystals may be ob- 

 tained of large size. It is a soluble salt, requiring only 18 

 parts of cold water and very little spirit to take it up ; it is 

 neutral to test paper. It gave on analysis, 



f 3*748 grains, 

 {8-309 ... 



dried at 212°, gave 

 carbonic acid, and 



1 2-210 ... 



water 



( 3-998 grains, 

 \2-662 ... 



dried at 212°, gave 

 sulphate of baryta. 



Expt. 



Calc. 



Carbon, 60-46 

 Hydrogen, 6' 55 

 Nitrogen, 

 Oxygen, 

 Sulphur, 9-12 



60-67 C 36 216 

 6-17 H 22 22 



393 N 14 



20-25 9 72 



8-98 S 2 32 



10000 



100-00 356 



