FUNCTIONS OF THE BRAIN. 

 II. 



831 



Fig. 361. 



medulla; P,pons varolii, with itg ganglia on either side (in purple). In III, the nuclei of the cranial 

 nerve-roots are numbered to correspond with the nerves. Red is used for the motor nuclei, and blue for 

 the sensory nuclei. The tracts in the cord are designated by the area similarly colored in the cross-section 

 of the cord beneath, c', column of TUrck ; c. crossed pyramidal column ; a, anterior horn ; a', anterior 

 root-zone; e, direct cerebellar column; b, posterior horn; h', column of Burdaeh ; d. column of GoU. 

 Higher up are seen b", the inferior peduncle of the cerebellum ; d', the tillet or lemniscus tract; f, the 

 fibres connecting the ganglia of the pons with the cerebrum and cerebellum ; h"', the fibres of the superior 

 cerebellar peduncle; h. the caudo-lenticular and thalamocortical fibres ; i, the commissural fibres : Th, 

 optic thalamus ; no, nucleus euudatus ; nl, nucleus lenticularis ; go, central convolutions. 

 In this diagram the course of b" seems to be in error in not undergoing a decussation. 



