40 DEVELOPMENT AND PURPOSE CHAP, in 



regard all such correlation as partaking of psychical char- 

 acter. Its special organ is consciousness without which 

 new correlations are only effected indirectly and cum- 

 brously. The development of Mind can accordingly be 

 measured by the nature of the correlations effected and the 

 conditions under which they are effected, and in comparing 

 these we shall find every gradation from the case where 

 the activity of consciousness is at zero, to that in which 

 it is the effective determinant of the entire function. 



