116 APPENDIX, 
ass. The insoluble lead soap, after separation of lead, afforded a 
residue which was solid at ordinary temperatures, and had a melting 
point of 48°, Neither of these fatty extracts was pure, and no 
attempt was made to ascertain whether they consisted of single acids 
or mixtures. The presence of glycerine was determined in the 
original aqueous sulphuric acid solation. The aqueous acid solution 
of the alcoholic extract of the roots, after treatment with petroleum 
ether, was agitated wi her. The ethereal solution was allowed 
to evaporate spontaneously, and the final desiccation conducted over 
sulphuric acid, The non-crystalline residue was dark brown and 
tacky with tar-like odour; it amounted to -123 per cent., calcu. 
lated on the roots containing 6°23 per cent. of moisture. Warmed 
with distilled water, a part of the extract dissolved, the solution 
affording the following reaction :— 
Reaction, strongly acid. : 
FeCl’ gave a dirty greenish coloration, passing rapidly to 
dirty brownish. : 
AgNO*®, slight turbidity ; on warming Ag. reduced. 
Aqueous NH*, orange yellow coloration. 
Acetate of lead, dirty yellowish, white ppt. 
Gelatine, no precipitate, 
KCN., no reaction. 
That portion of the ether extract insoluble in warm water was treated 
with aqueous NaHO, and the dark brown solution which resulted 
agitated with ether. The ether solution exhibited slight fluorescence, 
and on spontaneous evaporation afforded a yellow crystalline deposit, 
which appeared as needles and rosettes on microscopie examination, 
By treating this residue with proof spirit a certain amount of 
neutral resinous matter of a yellow colour was separated, This was 
precipitated on dilution with water. The insoluble crystalline residue 
afforded no crystalline sublimate when heated between watch glasses, 
The aqueous soda solution of the ether extract was mixed wi 
dilute sulphuric acid and reagitated with ether, The ethereal extract 
was of a yellowish-brown colour, strongly acid in reaction, and had 
the properties of an acid resin, 
The tartaric acid solution of the alcoholic extract of the drug was 
now mixed with a very slight excess of sodium bicarbonate and again 
agitated with ether. After agitation and on subsequent standing, 
a small quantity of a white crystalline substance separated, whieh 
