so 



with the starfish in more or less a state of unifi-d coordination 

 The movements of the arms are explained on the assumption of re- 

 flex connections by '#hich the arms a^e bent or twisted more nearly 

 at right angles to the -actively oriented tube feet* Evidence for 

 this conclusion is n ra*?n (l) from the movements of tha tube feet 

 md arms: (2) from an analysis of tne reaction -*hen the tube feet 



are proventsd .attaching by inv'irtin^ the Animal on sand; (3) 

 from the fact th >t stimulation of the dorsal myodermal sheath of 

 tn3 ray is not ->.n essential factor in the rig; ting reaction (4) 

 from the fact tnat the "unified impulse" persists during the ri ht- 

 ing reacti .n in Uie saiae direction to a decree quantitatively com- 

 parable to its persistence in ordinary locomotion (Cole). 



