THE PIGMENTS OF LEAVES 



Chlorophyll a. 



icoy 



NH r 



/ COOC JN) H 39 



OOCH, 



Isochlorophyllin a 



.COOH /3 

 ^CO 



) CO 



x 



Isochlorophyllin b. 



Dibasic Acids 



COOH 



Cyanophyllm 



and Rubiphyllm 



Erythrophyllin 



Chlorophyllin b. 



Glaucophyllin 



and 

 Rhodophyllin 



Monobasic A cids 



Phyllophyllin 



"COOH 



Pyrrophyllin 



Aetiophyllin' 



In all these compounds the magnesium is still present in organic combination. 

 These magnesium-containing compounds are all designated as phyllins. 



