104 Journal of the Asiatic Society of Bengal. (April, 19065. 
the alcoholic solution was heated with dilute hydrochloric acid, 
when a bright scarlet product was obtained. This was fil red 
off and washed with alcohol. 
e yield was very small, but thus prepared, the colouring 
principle was only very slightly aang inallsolvents. If dissolved 
in large excess of alcohol and allowed to evaporate the colouring 
principle deposited a saeroncdipie: powder which seemed to be 
crystalline when viewed under an oil immersion (,};). 
reparation of the coe Lee: —Since the above method 
was obviously not adapted to the preparation on a large scale, the 
colouring matter obtained by hydrolysis of the aqueous extract was 
dissolved as far as possible in alcohol and the solution heated with 
the hydrolysis of the aqueous solution resulted at once in precipt- 
tation of mos t of the _colouri pore principle, i in which case the 
_ 
extent i in alcohol, and the saloaring ‘principle could not be yer 
b is method e extraction was thus attended with great 
difficulty, and it was found that the best snub was to keep 
solutions dilute, not to add too much acid, and not to boil The 
it the aqueous extract was then moderately 
soluble in alcohol, and on warming the alcoholic solution wit 
c 
and sb me the A de urified Baas collected. 
a long time this could not be obtained pure, but it was 
tcalie found to oryaelns from pyridine and toluene. In the 
former of these it was very soluble, in the latter moderately 80. 
The crystals were apparently of two kinds—one yellow and 
one red, but on gently warming the yellow crystals they became 
one 
© combustions of an incompletely purified sample (it 
yielded a trace of ash on combustion) gave: 
C=69-10 C=68-91 
H= 753 %d FL 7.94 
w (C,H,O) requires } syste 
C),H,,0; .» oe — 
Several other combustions of other peas had been nn 
the course of the work. esults from 68° 
70° 36 for carbon, and 7°34 to 8°3 for ischicie, The author sis 
