326 'journal of Comparative Neurology and Psychology. 



6. Acid, salt, sugar and quinine when applied to the eyes all 

 caused retraction in some cases, the acid and salt producing the 

 most vigorous reactions. Both before and after retraction the 

 eyes were rubbed and dug at by the chelipedes. 



7. To a strong solution of hydrochloric acid the reactions were 

 such as to give every indication of pain. 



8. Chemical stimulation with meat caused general restlessness 

 and vague movements toward the source of the stimulus, but the 

 animals seem to depend chiefly on touch for the accurate local- 

 ization of food. 



9. Vegetables do not seem to stimulate the animals at a distance 

 but when touched to the appendages they are seized and devoured 

 eagerly. 



