FIG. PAGE 



147. Transverse section through the foot . 493 



148. Diagram of the sacral plexus . . . 500 



149. Diagram of a transverse section through the thorax 506 



150. Surface relations of the lungs, heart, and pleural 



sacs ....... 507 



151. Surface relations of the right lung and pleural sac. 



Lateral view . . . . .508 



152. Transverse section through the thorax, fourth 



thoracic vertebra . . . . .512 



153. Transverse section through a typical costo- 



vertebral joint . . . . .513 



154. Transverse section through the upper part of the 



posterior mediastinum . . . .514 



155. Transverse section through the superior media- 



stinum . . . . . .515 



156. Ossification of a vertebra . . . .516 



157. Kyphosis, produced by tuberculous disease of 



thoracic vertebrae. (Radiogram) . . 517 



158. Pott's disease in thoracic region of a child. (Radio- 



gram) ...... 518 



159. Scheme of the distribution of a typical spinal nerve 521 



1 60. The spinal medulla in situ . . . 525 



161. Diagram of a transverse section through the spinal 



medulla ...... 526 



162. Unilateral rotatory dislocation of the fourth 



cervical vertebra . . . . .528 



163. Diagrammatic representation of the chief motor 



and sensory tracts in the central nervous system 531 



164. Diagram illustrating some of the congenital 



anomalies of the vertebral column and spinal 

 medulla . 535 



