ARISTOLOGHIACEjE\ IGl 



solution was rendered alkaline and reagitated first with ether, 

 then with chloroform, and lastly with amylic alcohol. 



The dark resinous matter which separated on agitation with 

 petroleum ether was repeatedly shaken with ether, in which a 

 portion was soluble. The ethereal extx'act was of the consistence 

 of honey^ had a taste and smell like that of a mixture of turpentine 

 and peppermint, and was also bitter : in alcohol it was 

 soluble with acid reaction ; it was dissolved by ammonia, forming 

 a dark reddish orange-coloured solution, and was reprecipitated by 

 acids in yellowish flocks. The residue insoluble in ether was soft 

 when moist and dark chocolate in colour : on drying at lOO^C. it 

 became brittle, and could be easily reduced by pressure between the 

 fingers to a yellowish powder which possessed neither taste nor 

 odour : in alcohol it was soluble with acid reaction : in ammonia 

 the greater i)art dissolved, and was reprecipitated in yellow flocks 

 by acids. The bright yellow powder was soluble in ether, and 

 was left on spontaneous evaporation as a bright yellow varnish, 

 destitute of crystalline structure. In warm water the greater 

 part dissolved, forming a pale yellow solution which became 

 turbid on cooling^ and which had a marked acid reaction. 



In alkalies it was soluble with deep orange coloration, and 

 was reprecipitated by acids in pale yellow flocks : with ferric 

 chloride it gave a dirty brownish-red precipitate : with basic 

 acetate of lead, yellowish flocks : with baryta water no 

 precipitate, only a deep yellow coloration. 



The light petroleum ether extract was soft and brownish in 

 colour, and had a strong odour of turpentine ; on gently heating 

 in a small retort, a trace of a distillate was obtained which 

 had a most powerful terebinthinate odour and taste. 



The extract obtained by agitating the original aqueous acid 

 solution with ether was a bright yellow, transparent, soft, var- 

 nish-like mass, from which slowly separated a few small yellowish 

 nodules, which, on microscopic examination, were found to consist 

 of bundles of rod-shaped crystals. The extract was soluble in 

 alcohol with strong acid reaction, the solution exhibiting a well- 

 marked greenish fluorescence, as did also an ethereal solution. 



111.— 21 



