Soluble in boiling coucentrated acetic acid (separating in yellow 

 needles on cooling), less readily dissolved by ether and alcohol, scarcely 

 by water. 

 Beactions : 



Potassic hydrate, sol. red on boiling ; the solution, on cooling, 



becomes a crimson jelly, admixed with crystalline needles. 

 Potassic carbonate ) „„,.„i^ Hi=«nlvp 



Calcic hydrate solution ) •' 



Baric hydrate solution, dissolves traces, becoming coloured dark red. 

 Lead acetate (alcoholic), no pp. 

 Cupric acetate (alcoholic), brick-red pp. 



Concentrated sulphuric acid, red solution, decompos-ing on standing, 

 or on warming, into glucose and Eubiadin. 



KOTTLERIA. A. G. Perkin (Chem. Soc. Jnl., Aug., 180:!) finds for 

 ROTTLEHIN (compare p. 87) M.P. I'jr-l'Jl 5° ; pale flesh-coloured, slender 

 transparent needles (not yellow, as Anderson had found). 



Soluble in ether readily, in chloroform, benzene, and toluene ; 

 sparingly in carbon bisulphide and glacial acetic acid. 



Reactions : 



Alkaline hydrates and carbonates, dissolve. 

 Ferric chloride, brown coloration. 



ISOROTTLERIN was also isolated, in the form of a glittering salmon- 

 coloured mass ; M.P. l'J8°-l'.)9°. 



Soluble in a mixture of ether and chloroform, sparingly in ether alone. 

 Insoluble in hot benzene, carbon bisulphide, chloroform. 



Reactions : 



Alkaline hydrates, sol. cold, orange-red. 



„ carbonates^ sol. boiling, orange-red. 

 Ferric chloride (alcoholic), brownish-black coloration. 



STACHYS tuberifeia. A. v. Planta and E. Scbnize {Berichle il. 

 d. Chem. GVs., 26, 'J.i'.l) have separated S7/(CWra/?//Vf, C^HuXO,. resembling 

 Hetaine. ; transparent deliquescent crystals ; M.P. 210' (after losing water 

 at 100°) ; neutral reaction. 



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