CHLOROPHYLL AND ENERGY 



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In 1944, J. H. Smith studied the forms in which the fixed 

 carbon is found in the sunflower, and this was the result of 

 his analyses: 



Time of exposure in minutes 27 



58 



101 



146 



These analyses seem to suggest that saccharose is the first 

 glucoside formed. First, it represents more than half of the 

 carbon fixed; its proportion only decreases in relation to the 

 whole, in the first place because it is not a form of storage, 

 but also because an equilibrium is doubtless established with 

 the OSes which are perhaps the product of its disintegration. 

 It might be, not the first glucoside formed, but the first 

 glucoside free of phosphoric acid; the formation of sac- 

 charose might perhaps be a means or an opportunity for 

 glucose-phosphate and fructose-phosphate to abandon their 

 phosphoric acid and leave the cycle which formed them. 



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