THE TRACTS 271 



2. Cerebellar Tracts : — 



The Direct or Dorso-lateral Cerebellar Tract {Tract of 

 Flechsig) arises from the cells of Clarke's column (situated 

 internally on the posterior horn), occupies a dorsolateral 

 position in the cord and enters the cerebellum by the 

 inferior peduncle, ending in the lower part of the vermis. 

 This tract is uncrossed. 



The Indirect or Anterolateral Cerebellar Tract {Tract of 

 Gowers). — These fibres arise from Clarke's Column, form 

 a ventrolateral tract and enter the cerebellum by the 

 superior peduncle, ending in the superior part of the 

 vermis. They are mainly uncrossed. 



3. Spino-thalamic and Spino-tectal Tracts. — Intermingled 

 with the Tract of Gowers are a few fibres travelling upwards 

 to the thalamus and corpora quadrigemina. They are 

 partly crossed, partly uncrossed. 



