257 
The colouring matters of this series insoluble in alkalies, and 
soluble in 10°/ 0 and 12% hydrochloric acid, crystallize from ether 
easily. Alcohol dissolves them also with difficulty, chloroform easily. 
The original ethereal solution (fraction in 10°/ 0 acid) from which 
the crystals were afterwards deposited, causes in the spectrum 
5 bands, their position corresponds to the following wave lengths: 
A. Concentration 1 
B. 
Concentration 1 : 3 
C. Concentration 1 : 6 
Band 
Band 
I X 671 — 658 
I 
max. X 659 
II X 642 — 631 
II 
max. X 636 
III X 594 — 574 
mj 
shadow from X 585 
X 580 — 572 
III 
max. 579 
IV X 557 — 538 
IV 
X 552 — 550 
IV 
„ 544*5 
V X 520 — 489 
V 
1 514 — 495 
V 
„ 507 
The band III is 
split in 
concentration B into 
two 
bands, it is 
however difficult to measure the more refrangible edge of the 
weaker one. 
The colouring matter isolated from the 12% acid fraction causes 
quite analogous absorptions, but the first band is even darker and 
broader than in the foregoing colouring matter. The ethereal solution 
of this fraction deposits after some time beautiful crystals which 
dissolve with difficulty in ether. These latter solutions do not show 
the band in the red, which appeared in the original ethereal solu¬ 
tion from which the crystals were deposited. 
Ethereal solution of crystals obtained from the 12% acid fraction. 
A. 
Concentration 1 
B. Concentration 1 : 3 
C. Concentration 1 : 
Band 
I 
l 644 
-633 
I 
max. X 638 
II 
À 595 
— 572 
II 
j shadow from X 586 
1 X 582 — 575 
II max. X 576 
III 
l 558 
— 532 
III 
X 554 — 541 
III „ X 549 
IV 
X 519 
— 489 
IV 
X 517 — 499 
IV „ 512 
Band II in concentration B is split up into two; the first of 
them appears as a „shadow^, the more refrangible edge of which 
