IS BIGNONIACEM. 



for a few minutes bbck particles of reduced silver were preci- 

 pitated. 



2, A solution of neutral acetate of lead in proof spirit gave a 

 light-red bulky precipitate insoluble in boiling acetic acid. 



3* Lime water imparted an orange colour, wbicli quickly 

 clianged to olive- green, followed by a precipitate of tbe same 

 colour. 



- 



4. An aqueous solution of sulphate of copper gave a golden 

 yellow colour, quickly followed by a dirty brown precipitate, 

 the supernatant liquid being distinctly greenish. 



5. Solution of ferric chloride (acid) produced a brownish-red 

 colour, which, in a few minutes, turned smoke-colour. 



• ■ 



6. Solation of subacetate of lead gave a golden yellow precipi- 

 tate. 



7. An aqueous solution of mercuric chloride produced a white 

 precipitate. 



8. An aqueous solution of permanganate of potash, acidified 

 with sulphuric acid, was indantly decolorized. 



9. A solution of the crystals in proof spirit did not reduce 



Fehling. 



.The authors say: — "We have attempted to hydrolyse this 

 body, by subjecting a. strong alcoholic solution to the prolonged 

 action of 10 per cent, solution of sulphuric acid at a boiling 



temperature 

 Wg 



centesimal com- 

 sufficientlv con- 



j> 



position, but the results so far obtained are 

 elusive to be incorporated in this paper. "VVe hope to be able 

 to publisli shortly a supplementary note dealing with points 

 in process of investigation. Meanwhile, we propose that this 

 interesting principle be designated Oroxylhi. 



C. The marc left after exhaustion with petroleum spirit and 



ether was percolated with cold absolute alcohol. The residue 



resulting from the distillation of the spirit was treated with coW 



proof spirit, which took up the greater part of it. The 



insoluble portion dissolved readily in boiling proof spirit, and, on 



