PLATE XI 



Plate XI is from the upper surface of a section through 

 the intervertebral disc (Fibrocartilago intervertebralis 

 VII) between the seventh and eighth thoracic vertebrae 

 posteriorly and through the fourth sternochondral articu- 

 lations anteriorly. The plane of the section is 1.5 cm. anter- 

 iorly and 2.4 cm. posteriorly below that of the last section, 

 so that it is horizontal. 



94 



