THE COD. 



L -5 



m.o 



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

 beneath ; C, from the left side ; D, longitudinal vertical section ; E, 

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

 part of the cerebellum (crb) and of the optic lobes (o.l) ; 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). 



aq.s, aqueduct of Sylvius ; c.c, crura cerebri : c.h, cerebral hemis- 

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

 tween lobi posteriores : crb, cerebellum : f.G, fornix of Gottsche : in, 

 inmndibulum : /./, lobi inferiores : l.p, lobi posteriores: m.o, medulla 

 oblongata : o ./, optic lobes : elf, olfactory lobes : //, pituitary body : 



