CONTENTS. XV11 



CHAPTER XIX. 



METHODS AND APPARATUS FOR OBTAINING GRAPHIC EECORDS OP 

 MOVEMENTS IN THE LIMBS, ETC., AND ENUMERATING SUCH 

 MOVEMENTS AND THEIR COMBINATIONS ; PROBLEMS TO BE 

 INVESTIGATED BY THESE METHODS. 



Movement as a result of vital action is capable of physical 

 experimentation Early attempts to record movements 

 Apparatus described : the motor gauntlet ; the recording 

 tambours ; the contact-making tambour ; electrical coun- 

 ter; method of using the apparatus Problems; as to 

 muscular twitching in exhaustion Movements of an 

 infant Inhibition by light Measurement of differentia- 

 tion of movements Retentiveness Signs of emotion 

 Potentiality for mind Co-ordination Athetosis Chorea 347 



INDEX .. 363 



