52 PASSIFLOREZ. 
silkiness of the liber cells. 
_ Chemical composition.—Operating upon the root-bark, oti 
removed 8 per cent. of brownish-yellow resin, partly soluble 
spirit, with a neutral reaction. Alcohol extracted about 
per cent. of dark-red colouring matter consisting mostly 
tannic acid. This extract was only partly soluble in water 
insoluble portion became clear with ammonia, but the li 
rapidly pectinised. The tannic acid gave a brownish-g 
colour with ferric salts. The aqueous extract was also da 
coloured, and nearly half of it was precipitated by ne 
plumbic acetate as one or more organic acids. This ex 
and that part of it forming a lead compound was tested ph 
logically and found to have a cathartic effect ; the lead 
The powder has a cobweb-like character due to the length ot 
characters of cathartic acid. The portion of aqueous extract: 
precipitated by lead contained a neutral principle erystulli 
in white transparent prisms. The root had still another co 
ing matter removed by soda solution, a small quant ity of s 
and it left 4:8 per cent. of mineral matter when bi 
tannin of Casearia root is related to Ratanhia-tannic aci 
the composition of its lead salt and in yielding a crystal 1 
- sugar when boiled with acids, The insoluble tannin is 
similar to the Ratanhia red. 
PASSIFLOREZ. 
; CARICA PAPAYA, Linn. 
Fig.— Bot. Reg. 459, Papaw (Eng.), Papayer (Fr.). 
Hab.—America. Cultivated ——— tains 
milky juice. 
Vernacular.—Papiya, Arand-kharbus (Hind. ) Pang 
Papai (Mar.), sii daira Aa 2 Ba 
nae (Can.) elie: 
