126 



pringsheim's researches on chlorophyll. 



ration is possible. But in respect of its origin, hypo- 

 chlorin appears mOre strongly bound up with assimilation 

 than these other proximate constituents of the plant body ; 

 for> of all the products in the chlorophyll-apparatus, hypo- 

 chlorin is the only one besides the chlorophyll colouring 

 matter itself^ which^ in angiosperms, cannot develope without 

 light. 



Complete anatomical proof that hypochloriu is the primary 

 assimilation-product is not yet possible, our knowledge of it 

 is too recent) and it is only by artificial imitation of the 

 assimilation-process that all doubt can be set at rest. Yet 

 the close relation of hypochlorin with the function of the 

 chlorophyll-corpuscle — with its assimilation and respira- 

 tion — has been fully and with certainty established through 

 the foregoing account of its origin, its constant occurrence in 

 chlorophyll-corpuscles, and its behaviour in light and oxygen. 

 With no body in the cell does the hypochlorin exhibit such 

 close relationships of function as with chlorophyll colouring 

 matter. So much so, indeed, as to almost lead to the belief 

 that it is an artificial product of the chlorophyll colouring 



for a longer or shorter time to Light. All the Seedlings at the time of 

 exumination were deep green. 



Still more marked thai! i« this species is hypochlorin found in foilr weeks* 

 old seedlings of P ttlarifimd grown lii darkness. 



