- 80 = 



Figure III, 17c 



Adsorption sequence of the pheophytins of the 

 principal chlorophylls in columns of powdered 

 sugar washed with petroleum ether containing 

 Ool per cent n-propanolo 



-YGRAY 



-Y 



-GRAY 

 -GRAY 



PHEOPHYTIN b 



PHEOPHYTIN d 

 PHEOPHYTIN a + 

 ISOPHEOPHYTIN 

 PHEOPHYTIN o' 



d 



