osteometry; the measurement of the bones 67 



[The orbital breadth of the Monaco Agreement employs the 

 dacryon instead of the maxillofrontale, but modern usage prefers 

 the latter. The difference would be so very slight that it would 

 not seem necessary to calculate two indices.] 



chamaeconch below 76 



mesoconch 76-85 



hypsiconch 85 + 



22. Nasal index ^sal breadth [14] X 100 

 nasal length [13, n — ns\ 



leptorrhine below 47 



mesorrhine 47-51 



chamaerrhine 51-58 



hyperchamaerrhine 58 + 



[The nasal spine is to be located laterally (cf. nasospinale, under 



Landmarks; also the description of No. 13)]. 



23 Maxillo-alveolar index maxill °- alveoIar breadth [18] X 100 



maxillo-alveolar length [18 bis] 



dolichuranic below 110 



mesuranic 110-115 



brachyuranic 115 + 



24 Palatal index palatal breadth [1%] X -i°? 



palatal length [19a] 



leptostaphyline below 80 



mesostaphyline 80-85 



brachystaphyline 85 + 



25 Mandibular index mandibular le n £ th t 46 l X 10 ° 



bicondylar breadth [25] 



nc t> -j breadth of ramus [28a] X 100 



26. Ramus index -, -: — -. - — ^— -. 



length ol ramus [2 1\ 



27. Dental index m olar leng th X^OO 



nasion-basion line [9] 

 [The molar length is that of the two bicuspids plus the three 

 molars of the upper jaw. The measure is taken from the anterior 

 (mesial) side of the first bicuspid to the posterior (lateral) side 

 of the third molar]. 



microdont below 42 



mesodont 42-44 



megadont 44 + 



III. INDICES SHOWING RELATIONS BETWEEN CRANIUM AND FACE 



28. Longitudinal crania-facial index basion-prosthion line [10] X_j00 



maximum cranial length [1] 



29. Transverse craniofacial index bizygomatic breadth [8] X 1 00 



maximum cranial breadth [2] 



