i6 



Carbon Assimilation. 



The ethyl alcoholic solution of chlorophyll a is blue green with 

 deep red fluorescence, the colloidal solution in water is pure green 

 and does not fluoresce. The alcoholic solution of chlorophyll b is 

 greener, compared with a it is tinted a little yellow and the fluores- 

 cence is red with a tinge of brown. 



s 



SlIBlfIB m!M - 



The different behaviour of the two chlorophylls on saponifica- 

 tion has been mentioned previously. Chlorophyll a gives a pure 

 yellow and b a red colour both of which change back subsequently 

 to green. 



