APPENDIX. 115 
brown colour and of the consistence of treacle. The mare left after 
extraction with boiling spirit was repercolated with 250 ¢.c. cold 
spirit containing 1 per cent. of tartaric acid, and the spirit evaporated 
off at alow temperature, The two extracts were now mixed with 
water containing 2°5 grammes of tartaric acid, and the mixture 
agitated with light petroleum ether. During agitation a few yellow- 
ish flocks separated. The petroleum ether extract amounted to 1°173 
per cent., calculated on the root containing 6°23 per cent. of moisture. 
The petroleum ether extract was yellowish-brown in colour, semi solid 
in consistence, and waxy in odour. The taste was nauseous, recalling 
eroton oil. In absolute alcohol it was wholly soluble with strongly 
acid reaction. On spontaneous evaporation of the alcoholic solution, 
a yellow transparent mass was left at the bottom of the beaker, 
while on the Bides 56 deposit was Paisinans yee — ee nieee 
microscopic examin , it 
An attempt was made to separ ate the petroleum ether extract into 
fractions, and with this object it was gently warmed with proof 
spirit, which dissolved a certain amount, and the extract was thus . 
roughly divided into a soluble and insoluble residue, The proof 
spirit solution, on spontaneous evaporation, deposited soft orange 
resinous matter, while some white deposit separated on the sides of 
the capsule, This was found to consist of oil globules, and a few 
minute needle-shaped crystals, In addition to oil and resinous 
matter possessing an acid reaction, the presence was also detected of 
an alkaloidal principle soluble in ether, which afforded marked indi- 
cations with the usual reagents. With Frohde’s reagent no change 
was observed in the cold, but adirty blue developed on gently 
warming, The portion of the petroleum ether extract insoluble in 
proof spirit was boiled with alcoholic potash, the solution evaporated 
to dryness and treated with water. The aqueous solution was turbid 
from the separation of brown flocks. The turbid solution was agitated 
with petroleum ether. The ethereal extract had a camphoraceous 
and terebinthinate odour, was of an orange colour, and had a 
melting point of 62°C, It was not furtherexamined, The aq 
soap solution was decomposed by dilute sulphuric acid and agitated 
with ether. The ether extract was converted into a lead soap and 
reagitated with ether. The soluble lead soap, after separation of 
