Hekrick, Gustatory Paths in Fishes. 



379 



appropriate movements to approach and seize the food and in 

 the case of the horned pout, Ameiurus, it was found possible to 

 differentiate a gustatory reaction from a tactile reaction and to 

 prove that both senses possess a "local sign ;" i. e., both the 

 tactile and the gustatory reaction can be localized in space. 



Fig. 2. Section tlirough tlie skin of the top of the head of Amiurus nielas, 

 showing a terminal bud. From \.\\tt Journal of Comparative Neurology. (JUDSON 

 Hekrick, 'oi). 



At d\% the dermis which is raised into a low papilla under the sense organ 

 and whose center is pierced by the nerve for the organ ; cl., clavate cells of 

 Leydig ; fiiuc, mucus cells of the epidermis. 



The peripheral pathways for these motor responses are now 

 well known and the problem of the present research may be 

 thus stated : Given the terminal relations of the peripheral 

 gustatory neurones and the peripheral motor neurones involved 

 in the known gustatory reflex movements of these fishes, what 

 are the central connections between them ? 



Experiment has shown that the taste buds in the outer skin 

 function in substantially the same way as those within the 

 mouth, though there are certain obvious differences, particularly 

 the fact that the stimulus if applied to the cutaneous taste buds 



