i o Marshall Ward a7id Dunlop. 
in water, and insolubility in alcohol, chloroform and ether, 
must be a glucoside, is split up on heating to about Jo°C. into 
glucose and a semi-crystalline substance. 
The endocarp, on treatment in the same way as the peri- 
carp, acted in the same manner; on digestion at 30°C. no 
precipitate was obtained, and the solution gave no glucose 
reactions ; on digestion at a temperature about jo° C. a 
crystalline precipitate was again thrown down, and the filtrate 
from this yields a precipitate on warming with Fehling’s 
solution. Thus the substance in the endocarp acts in the 
same manner as that in the pericarp, both probably being the 
same glucoside, but contained in much larger quantities in the 
pericarp. If the seeds be removed and digested for twenty- 
four hours, at a temperature of 30°C, an opalescent clear 
solution is obtained ; if the seeds are digested at 70° C. the 
solution still remains clear, showing that the glucoside is not 
contained in the seed. 
The pericarp was digested in water for twenty-four hours 
with the endocarp ; no change took place. 
The pericarp was digested in water for twenty-four hours, 
at a temperature of 30°C., and the solution filtered off, and 
added to the solution obtained on digesting the seeds for 
twenty-four hours at 30°C. After leaving them at 30°C. for 
half-an-hour a precipitate was obtained, which soon became 
very copious, and which was found to consist chiefly of needle- 
shaped crystals, and also of the semi-amorphous masses 
obtained by digesting the whole fruit (Figs. 19 and 20). The 
filtrate from this precipitate yielded, on warming with 
Fehling’s solution, a copious precipitate. Thus the yellow 
glucoside has been again split up into glucose and a crystalline 
substance, and this time not by heat, therefore it must have 
been by means of some substance contained in the seed. 
If the solution obtained from the seeds is boiled for ten 
minutes and added to a solution of the pericarp, and allowed 
to stand for twenty-four hours at a temperature of 30°C., no 
precipitate is obtained, and the solution does not yield a pre- 
cipitate on warming with Fehling’s solution. Hence the 
