524 



THE BLOOD-VASCULAR SYSTEM 



Fig. 437. — A, Teleroentgenogram of a Formalin Preparation of the Anterior 

 Thoracic Wall with the Heart, Pericardium and Diaphragm in situ. (Le Wald, 

 X §). B, Explanatory Outline Drawing, Traced from the Negative and Con- 

 trolled BY Stereoscopic Views. 



The ostia have been accurately fitted with wire rings. P, pulmonary ostium; M, mitral; 

 T, tricuspid; aortic ostium is unlabelled; I-VII, right costal cartilages. 



I 



I 



