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allomerized chlorophylls o These allomerized pigments, that are formed 

 by oxidation of the chlorophylls and simultaneous reaction with methanol, 

 exhibit spectral absorption maxima at wave lengths about 10 m^ shorter 

 than those of the parent chlorophylls^.. 



Examination of the allomerized chlorophylls in columns of powdered 

 sugar has now shown that a mixture of pigments is usually producedo The 

 principal allomerization product of chlorophyll a^ formed a blue-green 

 zone in the sugar columns » It was more sorbed than the a itself and a 

 little less sorbed than luteino It exhibited absorption maxima at wave 

 lengths about 20 m^ shorter than those of chlorophyll a^„ The second 

 most abundant oxidation product was sorbed second above the chlorophyll 

 a and exhibited absorption maxima corresponding to those of the a^o 

 This pigment was sorbed with and below chlorophyll b and was identical 

 with the product obtained by the enzymatic oxidation of chlorophyll ja 

 in barley leaves (Figure III,l6)o Traces of several pigments more 

 sorbed than this oxidation product and less sorbed than chlorophyll a^ 

 were observed in the columns o All these pigments gave green phase 

 testso 



The principal allomerization product of chlorophyll b^ in methanol 

 was slightly more sorbed in sugar than the unaltered b. This product 

 exhibited spectral absorption maxima at wave lengths about 10 in^ shorter 

 than those of bo The second most abundant oxidation product was sorbed 

 second above the chlorophyll b and exhibited absorption maxima corre- 

 sponding to those of bo It was identical with the pigment obtained by 

 the enzymatic oxidation of chlorophyll b in barley leaves (Figure III, 

 l6) o Traces of additional pigments more sorbed and less sorbed than 

 the two principal oxidation products were also observed in the columnso 



