404 



ON INCREASE IN SIZE 



[PT. Ill 



It may, however, be concluded that the Minot curve is only useful 

 provided no theoretical conclusions are drawn from it, and that it 

 is retained simply as a convenient method of comparing processes. 

 Brody's own theories will be discussed later. 



As against the theory which Minot built up from his experiments 

 with growing animals, Murray has brought forward one convincing 



argument. Minot's theory of cytomorphosis involved the following 

 propositions: (i) that the rate of growth depends on the degree of 

 senescence, (2) that senescence is at its maximum when development 

 begins, (3) that the rate of senescence decreases with age, and (4) that 

 death results from the differentiation of cells. But, as Murray says, 

 we have no real evidence to show us that the "degree of aliveness" 

 at any given moment is in any way connected with the velocity of 

 growth at that particular moment, or, more correctly, that the latter 



