430 Henry Edward Crampton. 



or destruction on the basis of the condition of correlation that is 

 exhibited. Adaptation receives a precise definition: it means a 

 degree of correlation, capable of numerical determination; and 

 the question as to the utility of any given character becomes sub- 

 ordinate to the question of the effectiveness of any given combina- 

 tion of unit-characters, working in a functional of formative 

 complex. 



Finally, to possess an evolutionary value, this conception must 

 be taken in connection v^ith the view that the heritable characters 

 of an organism are congenitally determined. The heritable nature 

 of fluctuations as contrasted with mutations, however, is not a 

 matter that is necessarily brought into court. 



Barnard College, Columbia University, 

 June lo, 1905. 



