SOMATOMETRY ; THE MEASUREMENT OF THE BODY 161 



3 Arm-stre'.ch. 



25. Arm stretch (The best way to get this is to place the subject 

 against a wall, with arms extended horizontally, with shoulders and 

 dorsal aspect of the arms in contact with the wall, and with the palms 

 facing forwards. The extreme distance between the points of the two 

 middle fingers -when exerted to the utmost is the distance to be measured. 

 It facilitates measurement if the wall be marked in centimeters along 

 a horizontal area where the arms of the subject may be expected to come; 

 also if one middle finger tip be placed in contact with a small board 

 placed vertically upon the wall, the attention may be more completely 

 directed to the position of the other. 



In default of a wall the anthropometer may be held horizontally 

 behind the subject, and the fingers used to push the rods apart). 



4 Diameters. 



26. Biacromial diameter (a-a). 



27. Breadth of shoulders between the deltoids; widest place (secdary). 



28. Bimammillary diameter (th-th). 



29. Ilio cristal diameter; "cristal breadth" (ic-ic) 



30. Iliospinal diameter; "spinal breadth" (is-is). 



31. Bitrochanteric diameter; " trochanteric breadth" (tro-tro). 



32. Dorso-ventral pelvic diameter (lu-sy). 



33. Dorso-ventral diameter of thorax; plane I (at level of base of 

 ensiform cartilage). 



34. Transverse diameter of thorax; Plane I. 



35. Dorso-ventral diameter of thorax; Plane II (level of mesosternale). 



36. Transverse diameter of thorax; Plane II. 



[The four above diameters of the thorax are to be taken with the 

 chest midway between a full inspiration and an expiration.] 



37. Bicondylar diameter at elbow (secondary). 



38. Bistyloid diameter at wrist (secondary). 



39. Bicondylar diameter at knee (secondary). 



40. Bimalleolar diameter at ankle (secondary). 



5 Girths 



41. Girth of neck, across larynx. 



42. Girth of thorax, Plane I; (quiet breathing, midway between 

 inspiration and expiration). 



43. Girth of thorax; Plane II; (quiet breathing. Lift arms to shoulder 

 height, and place tape around chest, well up in the axillae, at level of 

 mesosternale; then let arms drop, while tape is held in place by the 

 operator. Let subject continue quite breathing, and take the middle 

 point shown by the tape between the extremes). 



44. Girth at waist, least girth of body. 



45. Girth of upper arm, greatest when relaxed. 

 11 



