66 



Figure III,llo Characteristic spectral absorption curves of the 



unique xanthophylls of blue-green algae (Cyanophyta) , 

 (See Figure 111,10.) 



1 T 



"1 r 



T 



1 1 \ r 



XANTHOPHYLLS OF PHORMIDIUM 



SOLVENT, ETHANOL 

 ^ I I I I L 



J L 



± 



400 



450 



5 00 roL 



