112 ALES' HRDLIKA 



ORBITS 

 Orbital breadth C. g. 



Landmarks and Method: As given by I. A. (p. 17). 

 Orbital height. C. g. 



Landmarks and Method: As given by I. A. (p. 17). 



UPPER ALVEOLAR PROCESS (" PALATE ") 

 Breadth. C. g. 

 Length. C. g. 



Landmarks and Methods: Follow I. A. (pp. 17, 18). 



LOWER JAW 

 Bigoniac breadth. C. g. 



The diameter between the most distal points on the external surface 

 of the angles of the jaw. 



Method: Use stub branches of the compass. Apply instrument so 

 that the rod rests on each side against the ramus ascendens, while 

 the branches are brought to the most prominent points about the 

 angles of the jaw. 



Angle of lower jaw. Broca's mandibular goniometer. 

 Method: See 1. A. (p. 21). 



Note: The angle differs in general on the two sides of the jaw. The 

 logical procedure is to measure the angle on both sides and record 

 the mean. 



Height of symphysis. C. g. 

 Height of the body of the lower jaw. C. g. 

 Maximum thickness of the body of the lower jaw. C. g. 

 Landmarks and Method: As given by the I. A. "(p. 20). 

 Note: To obtain the thickness, measure same on both sides and 

 record the mean (if marked difference is found, individual measure- 

 ments may also be given) . The instrument should be held so that 

 the midline of the teeth (antero-posteriorly) corresponds to the 

 midpoint of the rod of the compass between the two branches. 



MISCELLANEOUS 



Maximum Circumference. A. t. 

 Landmarks and Method: As given by the I. A. (p. 19). 

 Sagittal arc. A. t. 

 Landmarks and Method: As given by the I. A. (p. 18). 



