eS . DLEGUMIN OSE. 457 
; it flarkene i in eslour, and swells up like eon and only par- 
- tially dissolves. Both fresh and commercial samples behave in 
_ the'same: manner with rectified spirit, giving up less than half 
their weight of tannin to the solvent, and ici’ a large 
antity of insoluble gum. 
4 — * Chemical composition: Rape ke to. Hanbury, Butea gum- 
- Yields 1-8 per cent. of ash, and contains 13:5 per cent. of water. 
__ Ether removes from it a small quantity of pyrocatechin. Boil- | 
a ing alcohol dissolves it to the extent of 46 per cent; the solu- 
_ tion which is but little coloured produces an abundant greyish 
a green precipitate with perchloride of iron, and a white one 
. with acetate of lead. -It may be hence inferred that a tannic 
_ acid, probably kino-tannic acid, constitutes about half of the 
weight of the drug, the remainder being a soluble mucilaginous © 
_. Substance. Butea kino submitted to dry distillation yields 
_ pyrocatechin. According to Eissfeldt it does not contain 
. ‘Pyrocatechin, but yields it on dry distillation. 
a ‘Roxburgh states that he obtained an extract by aponune 
ths j juice of the flowers diluted with alum water and rendered 
clear by depuration, which proved a brighter water colour than 
gamboge. He further says that infusions of the dried flowers 
yielded ‘an extract very little, if any thing, inferior to that 
Made from the fresh juice: These extracts after being kept 
* for @ year remained perfectly bright. The flowers are used.as 
a a dye stuff in Bengal and are exported to the N.-W. Provinces. 
_ The oil of the seeds is yellow, sp. gr. 0°917; it is nearly 
tasteless, and solidifies at 10°. (Lepine.) Brannt gives 0°927 
as the specific gravity The seeds have been examined by N. 
Wa aeber (Pharm, Zeirtschr. fir Russland,. 1886) ; the results of © 
‘the analysis are as follows, alkaloids and glucosides were not — 
found— te 
Moisture aes . 6°62 
| See pe sense Oe 
te es le 4.1820 
Wax soluble in ether .......-+--sereeererres G08 
‘ Albuminoids sol. in water....+rese-eer++ ye D 
32 sol. in soda seeventessesrerree 
