

Found. 



7038 



7002 



6 74 



6-70 



410 



4-53 



18-79 



18-71 



572 DRS MACLAGAN AND A. GAMGEE ON THE ALKALOIDS CONTAINED 

 This gives by calculation — 



Carbon, 

 Hydrogen, 



Nitrogen, . 

 Oxygen, ■ 



10000 100-00 



According to this formula, the compound with tetrachloride of platinum 



should contain 18'07 per cent, of platinum, 



Mean of five determinations, . . 17*72 „ „ 



According to this formula, the hydrochlorate 

 of the base should contain .... 9'60 per cent of chlorine. 



Actually found, .... 9*361 „ ,, 



Below the formula of bebeerine, as ascertained by Von Planta, is placed side 

 by side with that of nectandria, as ascertained by ourselves — 



Bebeerine, . . . C 18 H 21 3 N. 



Nectandria, . . . C 20 H 23 O 4 N 



II. Examination of a new Base insoluble in Chloroform. 



In a previous part of this paper it has been stated, that the precipitate pro- 

 duced by ammonia in a solution of the mixed sulphates obtained from the wood 

 of the bebeeru tree, was by treatment with chloroform subdivided into two portions, 

 of which one, Nectandria, has been already examined. 



After the treatment with chloroform, 167 grammes of a greyish solid matter 

 remained. This matter was nitrogenous, soluble in dilute acids ; its alcoholic 

 solution had a very marked alkaline reaction ; its solution in hydrochloric acid was 

 abundantly precipitated by tetrachloride of platinum. On boiling the base with 

 water, the latter soon acquired a rich yellow colour, and possessed a very bitter taste; 

 the solution had a strongly alkaline reaction. On allowing the hot solution to cool, 

 a yellow powder subsided. When examined with a power of 300 diameters, this 

 powder was seen to be uniformly composed of nodules, and clustres of nodules. 

 On repeatedly dissolving the powder in boiling water, and examining the deposit 

 which subsided on cooling, the same forms were visible. From the portion of 

 residue insoluble in chloroform, we obtained 565 grammes of this yellow sub- 

 stance, which our observations prove to be a powerful base. 



It was entirely soluble in water. 



1. 100 grammes of the boiling solution, on being evaporated, gave 211 grammes 

 of solid residue. 



2. 100 grammes of the solution which had cooled, and had deposited the yellow 

 nodules, yielded 177 grammes of solid residue. 



From these determinations, it would appear that one part of this yellow base 



