DETERMINATION OF SIZE OF HEART BY X-RAYS 



441 



two women with clinically normal hearts studied at the Wis- 

 consin Clinic show hearts relatively slightly small for the lighter 

 groups, more markedly small for the heavier groups. While it 

 appears that the standard of heart silhouette area in relation to 



TABLE 2 



Average percentage of divergence from the standard silhouette area corresponding 

 to a given body weight in youths and adults 



body weight given in tables A and B is slightly large for the 

 average women the difference between the size of the silhouette 

 for men and women of a given weight is so little, probably not 

 over 2.5 per cent for individuals of average size, that it does not 

 seem worth while to try to establish a separate curve for women. 



