PLATE XII 

 SPINAL CORD (Sobotta) 



FIG. I. Cross-section of the human spinal cord at the cervical enlargement (from an 

 adult and fixed two and one-half hours after death Miiller's liquid ; sodium carminate), X 8. 



bg, sections of bloodvessels ; x, region of the obliterated central canal ; cp, posterior 

 cornua ; fa, column of Tiirck and anterior ground column ; cma, anterior median fissure 

 fe, column of Burdach ; fg, column of Goll ; fl, lateral column ; pm, pia mater ; ra, anterior 

 nerve-root ; rp, posterior nerve -root ; sg, substantia gelatinosa ; sp, posterior median fissure ; 

 fr, formatio reticularis. 



This section shows quite distinctly several of the columns indicated in diagrammatic figures 

 in the text. 



FIG. 2. Cross-section of the human spinal cord at the lumbar enlargement two-thirds of 

 the section shown fixed two and one-half hours after death (pia mater in red; medullated 

 fibres in blue; nuclei in red ; Miiller's liquid; Weigert- Pal's stain for medullary sheaths; alum- 

 carmin), X 15. 



caa, anterior white commissure ; Cc, remains of the central canal ; fma, anterior median 

 fissure; gl, external glia sheath (neuroglia); Gz, cells of the anterior horn; nd, dorsal nucleus; 

 pm, pia mater ; Ka t anterior nerve-roots ; Rp, posterior nerve-roots ; sg, gelatinous substance 

 of Rolando ; snip, posterior median fissure. 



