468 



C. R. BARDEEN 



corresponds with the arbitrary Une selected for demarcating the 

 base of the heart silhouette area. 



The following table, table 17, shows the ratio of the observed 

 to the volume estimated from silhouette area in sixty-two bodies. 

 The difference between the observed and calculated volume and 

 the percentage of divergence from the calculated volume were 



TABLE 17 



Relation of observed volume to volume estimated from silhouette area and of observed 



heart loeight to weight estimated from silhouette area 



Volume underestimated 



490-990 

 510 



210-525 

 410 



600-685 



287-1000 



55 



22 18M 



3F 



I IG 



Volume as estimated 



