Dr. A. von Planta on the Constitution of Bebeerine. 117 



3*797 grs. bebeerine gave 2"740grs. platinochloride of ammo- 

 nium, corresponding to 4"53 per cent, platinum. 



Carbon . 

 Hydrogen 

 Nitrogen . 

 Oxygen . . . 



These results correspond with the formula — 



C38 H21 N 0«, 



of which the foUomng is the calculation compared with the mean 

 of experiment*: — 



100-00 100-00 311 



Drs. Maclagan and Tilley's analyses, when recalculated with 

 C = 6, gave the following results : — 



100-00 292 



Of the double compounds of bebeerine with the soluble chlo- 

 rides of the noble metals, I found only that with bichloride of 

 platinum suited for analysis. The gold salt is rapidly decomposed 

 by exposure to the air. 



The platinochloride of bebeerine is best obtained by pouring 

 a concentrated solution of hydi-ochlorate of bebeerine, cU-op by 

 drop, into a dilute solution of bichloride of platinum, kept in 

 continual agitation, by which means it is thrown down in a state 

 which admits of its being easily washed. When dried and pul- 

 verized, it has a pale orange-yellow colour, and, like the other 

 salts of bebeerine, shows no traces of ci-ystallization. 



* Want of material prevented me making a combustion with oxide of 

 copper and oxygen ga.s. My earlier analyses of impure bebeerine gave — 

 Carbon . . . 67-83 71-85 



Hydrogen . . 6-38 7-80 



