354 LIGHT ABSORPTION CURVES OF SOME CAROTENOIDS 



J30 350 



UOO 



450 



500 



Fig. 1 6. Astacene in pyridine 

 Ber. 66 (1933) 492 



550 600 

 —X in ma 



Fig. 17. 



Bixin : 



Bixindialdehyde ; Apo-3-norbixinal methyl 



ester from stable bixin, all in ethanol 

 Helv. chim. Acta 26 (1943) 120 



