PLATE IV 



Clavicle 



Trachea 



Ventricular 

 part of 

 heart 



Diaphragm 



FIG. 65. Radiograph of Thorax. Oblique view showing the 

 " post-cardiac space." 



The "post-cardiac space" lies behind the base of the heart, 

 and more particularly behind the left atrium. The thoracic part 

 of the descending aorta and the oesophagus pass through it. 

 (Goldesbrough.) 



