Vol. I, No. 4.] Colouriny Principle of Nyctanthes Arbor-tristis. 105 
EVES: 
does not attach importance to the formule mentioned above. 
It is certain, however, that Sirkar’s results are useless. 
Properties of the colouring matter.—The red crystals were 
practically insoluble in water, very slightly soluble in ether, benzene, 
alcohol, ligroin, moderately soluble in toluene, and readily in 
pyridine. With strong sulphuric acid they gave an intense blue 
compound which rapidly became yellow through apparent 
absorption of atmospheric moisture. 
The author hopes to complete the investigation on some 
future occasion. 
OW ae OO 
