PLATE 6 



EXPLANATION OF FIGURES 



24 A diagram of the ventral view of the brain of a 45 6.0 frog tadpole to show 

 die position of the hypophysis.. 



25 A model of the infundibular process and hypophysial components of a 3S/3.5 

 normal frog tadpole (specimen 15), fixed 63 days after the operative stage. Liver 

 diet. The caudal end of the infundibular process faces the top of the page, a, 

 dorsal, /<, ventral, c, median sagittal, views. X89. 



124 



