1324 



A MANUAL OF ANATOMY 



One half of the horizontal limb of the T is central, and enters th( 

 cord at the dorso-lateral sulcus between the dorsal and latera 

 columns of white matter. The other half of the horizontal limb i 

 peripheral, and passes outwards in the course of the nerve. 



Within the cord a few of the fibres enter the marginal bundle o 

 Lissauer, and the dorsal cornu of grey matter, but the most of then 



Fig. 



554- — Course of Nerve-Fibres in the Spinal Cord (from Halli- 

 burton's ' Handbook OF Physiology' (after SchAfer). 



D. Ascending Branch of Fibre in the Spin 



Cord 

 Pi, P2. Posterior Cornual Cells 

 C (upper C). Cell of Clarke's Column 



5. Collateral, passing directly to arborize aroui 

 an Anterior Cornual Cell (2) 



6. Collateral, with an Intermediate Cell-Slati< 

 in a Posterior Cornual Cell (Po) 



7. CoUateral.arborizing around a Cell of Clark( 

 Column (upper C) 



8. Continuation of Main Ascending Branch 

 Fibre 



P. Pyramidal Tract 

 I, 2, 3, 4. Anterior Cornual Cells 

 A, A, A, A. Axons of Anterior Cornual Cells 

 M. Muscular Fibre 



G. Unipolar Cell of a Spinal Ganglion, 

 giving Origin to a Fibre of a Pos- 

 terior Nerve-Root 

 B. Peripheral Branch of Fibre 

 S. Skin 

 C (lower C) Central Branch of Fibre, passing 

 into the Spinal Cord 

 E. Descending Branch of Fibre in the 

 Spinal Cord 



pass into the column of Burdach, close to the dorsal cornu of gre] 

 matter. Within this column the fibres divide into two branchcs- 

 ascending and descending. The descending branches, after a shor 

 course, enter the dorsal cornu. These descending fibres are usuall; 

 regarded as forming the ' comma tract of Schultz.' The ascendini 

 branches are longer than the descending, and, at various levels 

 they also enter the dorsal cornu. The ascending branches of th 



