THE COD. 



i-S 



Fig. 34. — Gadus morrhua. The brain, A, from above ; B, from 

 beneath ; C, from the left side ; j9, longitudinal vertical section ; £, 

 with the ventricles laid open from above, by the removal of the greater 

 part of the cerebellum (crd) and of the optic lobes (a./) ; the cerebral 

 hemispheres are also cut through horizontally to show the absence of 

 lateral ventricles, and the commissure (cm) by which the hemispheres 

 are united (nat. size). 



a^.s, aqueduct of Sylvius ; c.c, crura cerebri : e.A, cerebral hemis- 

 pheres : cm, commissure between hemispheres : cm', commissure be- 

 tween lobi posteriores : cri, cerebellum : / G, fornix of Gottsche : in, 

 infundibulum : /.«', lobi inferiores : /.p, lobi posteriores ; m.a, medulla 

 oblongata: a./, optic lobes: e//, olfactory lobes://, pituitary body: 



