ASOLEPLADEZ, 458 
arias 8 
wows 
dissolved, out by alcohol, and, as it occurred :in, the aqueous 
extract of the. residue, it was therefore soluble im water. As 
benzine and ether took from the leaves certain principles of the 
same appearance and weight, it was conceived that nothing 
would be gained by using both solvents; the preliminary 
extraction was therefore made with rectified spirit. The ether 
extract consisted of chlorophyll and two resins separated by 
their solubility in alcohol. The resin insoluble in alcohol form-. 
ed the larger portion ; it was soluble in chloroform, bisulphide. 
of carbon. and. benzine. It was elastic and tenacious, de- 
composed by warming with nitric acid, the product being pre- 
cipitated with water ; only partially saponified with caustic 
potash. Sulphuric acid dissolved it in the cold, giving a green 
solution.. It seemed to consist principally of a neutral resin. 
The resin soluble in spirit was readily saponified with soda, and 
gave a permanent bluish green colour with sulphuric acid; like 
the former resin it was of an acrid nature, and left a tingling 
sensation in the throat. - The alcoholic solution of the leaves 
was almost entirely soluble in water ; in fact, by treating the 
leaves separately by alcohol and water, 36°37 per cent. of 
organic matter was extracted, by treating the drug with 
water alone 36 per cent. was removed. By direct experiment 
it was found that in the former extract 0°74 per cent. was an 
acrid resin similar to those found in the ether extract. The 
aqueous solution of the substances soluble in alcohol had a 
decidedly .acid reaction, it gave no colouration with ferric 
chloride, showing absence of tannin. It .was deepened 
in colour with alkalies, but gave a bulky precipitate with 
sulphuric, nitric, hydrochloric and acetic acid. It reduced 
_ Fehling’s solution on boiling, and gave a cloudiness with 
Nessler, a precipitate with lead acetate, but none with tannin 
or picric acid. The precipitate caused by sulphuric acid was 
collected on a filter and washed till it ceased to give a cloudi- 
‘ness with barium. chloride. It, yielded a greenish — powder, 
insoluble in water, but soluble, in alcohol, ether, benzine and 
shloroform.. With potash, soda and ammonia it afforded fine 
solutions with orange coloured froth, but they er 
si ecg a Porat et 
