Carbon Assimilation. 
i 93 
whence 1—j < (m—1) 
and when m < 1 
and -—- < 1 
d—a 
we have 1—^-(m—1) 
Now 1—j is the difference between the real assimilatory 
*' • • b • 
coefficient and unity and — (m—1) is actually not greater than 0*01 
in the first case, nor less than —0*01 in the second. Hence the 
real assimilatory coefficient differs from unity by a quantity less 
than 0 01. 
From the results we have collected together in this section it 
becomes quite clear that the relation between the oxygen evolved 
in assimilation and the carbon dioxide taken in, is by no means 
definitely determined. Yet this is a question of great importance 
in regard to the problem of carbon assimilation, for in the determin¬ 
ation of the nature of a reaction or series of reactions, it is of first 
importance to know the quantitative relation between the initial 
substances and the products of the reactions. 
(To be continued). 
