156 



SUTHERLAND SIMPSON 



Transverse section through seventh thoracic segment (jig. 32). In 

 the mid- thoracic region the tract has the same general outhne 

 as in the second thoracic segment, but it extends farther dor- 

 salward along the median septum. There is also some reduction 

 in the number of degenerated fibers which it contains. 



Fig. 24 

 Fig. 25 

 Fig. 26 

 Fig. 27 

 Fig. 28 

 Fig. 29 



Transverse section, medulla oblongata. X 12. 



Transverse section, upper level of first cervical segment of cord. X 12. 



Transverse section, first cervical segment, lower level. X 12. 



Transverse section, second cervical segment. X 12. 



Transverse section, fourth cervical segment. X 12. 



Transverse section, sixth cervical segment. X 12. 



