ANTHROPOMETRY " 69 



but affords also a great facility for regulating the pressure. The 

 free end of the right branch is then applied over and somewhat to 

 one side of the median line of the most prominent part of the occiput, 

 and is moved up and down in saw-tooth fashion from side to side of 

 the occiput until the maximum length is encountered. The eyes 

 watch only the scale. The ease of manipulating the instrument 

 when handled in this manner is very gratifying. (Fig. 11.) 



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Fig. 11. Method of holding instrument in measuring the length of head. 



Breadth. — The greatest transverse diameter in horizontal plane 

 which can be found on the vault by the spreading compass (compas 

 d'epaisseur, Broca or Hrdlidka). 



Landmarks: Determined solely by the maximum breadth of the 

 skull above the supra-mastoid and zygomatic crests (Intern. Agr.). 



Method: The instrument is held as in first position for measuring 

 the length, and this position is retained. The left hand is placed 

 lightly on the top of the head of the subject, assisting in bringing the 

 latter into the most convenient position for taking the measurement; 

 the instrument is applied horizontally somewhat above what appears 



