CUCURBITACEM. 85 
ting off the alcohol, brittle yellowish flakes were left. In 
mmonia the principle dissolved forming a deep yellow solu- 
ion ; on the addition of acids the colour was discharged, slightly 
ellowish flocks being*precipitated, which redissolved in alkalies 
ith a deep yellow coloration: with tannin no precipitate 
was produced. Fréhde’s reagent gavea yellow colour in the 
cold, becoming emerald green on heating, and changing on 
cooling to blue, green, and finally to yellow. Nitric acid gave 
a yellow colour. Mayer’s reagent, after acidulation with sul- 
phuric acid, gave no precipitate. Concentrated sulphuric acid 
gave a deep yellow: on the addition of bichromate of potash 
there was n0 special colour reaction. On boiling with dilute 
in boiling water, and not eo tern iaties ; slightly soluble in 
ether; dissolving in alkalies with a deep yellow coloration 
and reprecipitated in gelatinous flocks by acids. The aqueous 
. : 
ghtly bitter, and precipitated an alkaline copper solution 
iling. 
The gelatinizing properties of this principle appear to be 
marked. *1016 gram when dissolved in 100 ¢. c. of boil- 
en expelled, agitation with acetic ether yielded an extrac- 
e, highly bitter, which afforded reactions similar to those = 
locynthin. 
ay were unable to obtain the principle in a crystalline 
‘The seeds contain a bland fluid oil free from bitterness, an 
ich possesses some siccative properties. sist 
Towicology.—Dr. Burton Brown (Punjab Poisons, 
otices the use of the fruit as an abo 
