FIG. 20. 



Fibres are here seen radiating from the third ventricle or clmty p, into the substance 

 of the brain, and along the medulla oblongata and spinal cord r, and the convolutions in 

 the front part of the cerebrum D D are here seen to converge to a centre. In dissec- 

 tions, the radiations are also seen extending along the nerves, like those along the optic 

 nerves seen in this figure, and from the spinal cord along the spinal nerves connected 

 with the organs. So that the medulla oblongata, spinal cord, and spinal nerves, with 

 those that issue from the central portions of the brain, appear like an elongation or con- 

 tinuation of its stria. 



