CEREBRAL LOCALIZATION 705 



eye, affect both pupils in a corresponding degree. It need scarcely be 

 emphasized, therefore, that the occipital cortex may be removed with- 

 out destroying the light-reflex. An injury to the posterior corpora 

 produces deafness in some animals, but not in monkeys. 1 These bodies 

 also exert an inhibitor influence upon reflex action and are concerned 

 with the orderly execution of movements. This is true especially of 

 fishes, amphibians and reptiles, in which animals these functions are 

 centered in the corpora bigemini, also known as the optic lobes. 



1 Ferrier and Turner, Brain, cciv, 1900, 27. 

 45 



