THE CHEST PANTAGRAPH 



239 



centimetre of actual measurement. The inner contour is that of 

 forced expiration, while the outer one is that of forced inspiration. 



Contours of chests, taken with chest pantagraph. 



In contour A the increase of lateral diameter by forced inspiration 

 is 2 cm., while the increase of dorsoventral is 3 cm. In the same 



