840 



THE NER VE SYSTEM 



of the opposite side of the oval outline as seen on section, is called the oval 

 bundle of Flechsig (tract us cervicolumbalis [Edinger]; dorsomediales Sakralfeld 

 [Obersteiner]). 



SULCO-MARGINAL TRACT 

 FROM SUP. QUADRIG. 



THIRD 

 LUMBAR 



WHITE VENTRAL COMMISSURE 



FIG. 612. Sections of the spinal cord at the level of the sixth cervical, sixth thoracic, and third lumbar seg- 

 ments, the conducting tracts being indicated on the right side of each section: C. Comma tract of Schultze. 

 H. Olivospinal tract of Helweg. M. Marginal tract of Spitzka-Lissauer. O. Oval field of Flechsig. 



Marginal Tract. Not all the axones of the dorsal nerve root enter the dorsal 

 column. Another group elsewhere described passes into the dorsal horn as 



