- 15 



Figure I,l» Successive steps in the formation of a chromatogranio 



Chloroplast pigments, of leaves, dissolved in petroleim 

 ether, adsorbed in a column of powdered sugar (left) 

 and washed with petroleum ether containing Oo5 per cent 

 ri-propanol (center and right) » 



-Y 

 "Y 



-Y 

 -G 



-Y 



-Y NEOXANTHIN 



-Y VIOLAXANTHIN 

 -YG CHLOROPHYLL b 



-Y 



LUTEIN + 

 ZEAXANTHIN 



-G CHLOROPHYLL a 



-Y CAROTENES 



