45 

 the organization of movements, learning may said to be 



due to a facilitation of selected responses. Them 



no movement which can be sail to be truly useless. Their 



mechanism has Deen evolved and their true value is lost 



once they are classed as useless. 



The process of organization of movements shows cer- 

 tain objective manifestations. It may be said to con- 

 sist of the animal passing from an inexcitable state to 

 an excitable one when a problem is undertaken, and, then, 

 as soon as progress is made in the organization of move- 

 ments, a disappearance of the • excitable states occurs. 

 This excitable state when the animal is first given the 

 problem, is the emotional one so often mentioned. 

 According to Dewey (6), it is the time when energy is 

 provided and adjustments fostered. This has been recently 

 substantiated by Gannon (7) on the work of the function 

 of adrenal secretions during emotional or excitable states. 

 It seems that adrenalia in the blood increases the 



