370 Murray Eden 



into the growth process without drastic modification of the generating function, 

 in particular without consideration of the history of a particular growing 

 configuration. The results of embryology suggest that the generating process 

 must contain a set of instructions that will alter the pattern of growth on the 

 condition that a given stage or over-all configuration shall have been reached, 

 and that such a change in pattern of development may occur a large number of 

 times during the process of maturation. It is certain that such a modified 

 generating process will have a higher information content than the process 

 considered in detail in this paper. It remains to be seen whether modifications 

 of this character can be fonnulated and whether a mathematical treatment of 

 the consequences is possible of achievement. 



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