1871.] Hydrobromic Acid on Codeia arid its derivatives. 505 



over S0 4 H 2 and finally at 100°, there were obtained the following numbers, 

 which correspond with those required for a base bearing the same relation 

 to morphia that bromotetracodeia does to codeia ; it is therefore provision- 

 ally named bromotetramorphia. 



0-3110 grm. gave 0*5980 CO a and 0-14/0 H 2 O*. 

 0'2785 grm. gave 0*1650 AgBr. 



Calculated. Found. 



, * x r * 



C GS 816 52-88 52-44 



II 79 79 5-12 5-25 



Br 5 400 25-93 25'22 



N 4 56 3-63 



12 192 12-44 



C 68 H 75 Br N 4 12 , 4HBr .... T543 100 00 



Hence the action of hydrobromic acid on bromotetracodeia is 



Bromotetracodeia. Bromotetramorphia. 

 C 72 H 83 Br N 4 O l2 + 4HBr=4CH 3 Br+ C e8 H 75 Br N 4 12 



Carbonate of soda throws down from the solution of the hydrobromate 

 a nearly white precipitate, which rapidly oxidizes and appears identical in 

 all its physical properties and chemical reactions with bromotetracodeia. 



When crude bromotetramorphia hydrobromate is precipitated by carbo- 

 nate of soda and the precipitate (after filtration and washing) redissolved 

 in hydrochloric acid and fractionally precipitated twice or thrice by strong 

 hydrochloric acid, white flakes free from bromine are ultimately obtained ; 

 these are the hydrochlorate of the corresponding chlorinated base, which is 

 therefore termed chlorotetramorphia. After drying at 100° the following 

 numbers were obtained : — 



0-4005 grm. gave 0*9030 C0 2 and 0-2230 H 2 O. 

 0-4670 grm. gave 0'2280 AgCl and 0-0180 Ag. 



Calculated. Found. 



C 68 876 61-79 61*49 



H, 9 79 5-98 6-19 



Cl 3 177*5 13-44 .... 13-35 



N 4 56 4-24 



Q 12 192 14-55 



C 60 H„ C1N 4 12 , 4HC1 1320-5 100 00 



Converted into platinum-salt and dried at 100°, — 



0-4235 grm. gave 0'0840 Pt= 19*83 per cent. 



The formula C 68 H T5 CI N 4 12 , 4HC1, 2PtCl 4 requires 19*72 per cent. 



* All combustions given in this paper were made hy lead chromate and oxygen ; 

 except where otherwise stated, chlorine and bromine were determined by boiling with 

 silver nitrate and nitric acid. 



