RONALD E. MYERS 



499 



16.0 mm.) ot the corpus callosum anteriorly did not affect the level of 

 transfer of simple discrimination Ill-ab. When, however, the section 

 extended to section of the anterior 87 per cent (15.0 of 17.2 mm.) transfer 



Table VI 



INTEROCULAR TRANSFER IN CATS WITH OPTIC CHIASMA 

 AND ANTERIOR CORPUS CALLOSUM SECTIONED 



was almost completely disrupted. On the other hand, Table VII shows 

 that encroachments greater than about 45 per cent (6.2 of 14.0 mm.) 

 posteriorly nearly completely abolished transfer while smaller posterior 

 lesions tended in most instances to compromise somewhat the early 

 transfer test performances. 



Table VII 



INTEROCULAR TRANSFER IN CATS WITH OPTIC CHIASMA 

 AND POSTERIOR CORPUS CALLOSUM SECTIONED 



Fig. 9 illustrates graphically the rate of learning of the response through 

 first one eye and then through the second eye in the case of the four cats 

 having the maximal expanses of the corpus callosum sectioned. It may be 



KK 



