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+ 



nasal breadth [14] X 100 



22. Nasal index - n , r ; 



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)]. 



maxillo-alveolar breadth [18] X 100 



23. Maxillo-alveolar index TH -, -, ; ,, M0 ,. n 



maxillo-alveolar length [18 bis] 



dolichuranic below 110 



mesuranic 110-115 



brachyuranic 115+ 



palatal breadth [196] X 100 



24. Palatal index ,, Mr .-j 



palatal length [19a] 



leptostaphyline below 80 



mesostaphyline 80-85 



brachystaphyline 85+ 



mandibular length. [46] X 100 



25. Mandibular index 



26. Ramus index 



27. Dental index 



bicondylar breadth [25] 

 breadth of ramus [28a] X 100 



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 



basion-prosthion line [10] X 100 



28. Longitudinal cramo-facial index - ^ r-pi ., r ,i 



maximum cranial length [1] 



bizygomatic breadth [8] X 100 



29. Transverse cramo-facial index - r-r-r ,., rr>1 



maximum cranial breadth [2] 



