580 



THE EMBRYOLOGY OF THE FROG 



-.dr.med. 



Fig. 339. 



Reconstruction of smelling apparatus of Frog and three transverse sections (on 

 the right) of tadpole through the regions marked A .4, B B, and C C. dr.nted., 

 glands on the medial side ; lat, lateral view of the olfactory cavity ; lat-u, com- 



