NERVOUS SYSTEM OF A TWO-HEADED PIG EMBRYO 401 



Fig 13 Section tlirough the gasserian ganglia of the outer (normal) sides of 

 the embryo, and the upper border of the left (outer) eye of head B. S. 228. 



Fig 14 Section through the median isolated ganglion (conjomed geniculate), 

 and the median sphenopalatine ganglia. The course of the infra-orbital nerves 

 has been added in dashed lines. S. 234. 



