84 Proceedings of the Royal Irish Academy. 
A few other measuresments may also be tabulated :— 
Breadth of face, or inter- ) | os aga oe | oa 198 
zygomatic diameter, .)| ~ | 
Frontal breadth, | 111 | 106 | 115%) 1108) Saran ae 
Occipital breadth,'. . . | 107,| 104 | 99 | 89x) MOOR MhOS 
Fronto-occipital arch, . | 416 | 395 | 875 | 390) /e4uomeenn 
Intermeatal arch, . . . 805 | 805 | 305 | 310 | 320 | 320 
As good average measurements as could possibly be taken to com- 
pare with the above are those published by Professor Flower in his 
Catalogue of the collection of the College of Surgeons in England. 
His figures are, for ‘‘ African negroes of various tribes :””— 
Br Wolicocephalic, << . . . «een 
HaguEbypsicephalic; ;... 2 i) eo) 
Avs Propnathous, ... . . =) LO44N@e) 
IN Platyrhine, . ..,. . lp o68iiGa) 
@ioWMesoseme, . . . . . « 86a G43) 
ayy ‘Mesocephalic, . . . 2.4 L888) 
For further comparison I may put down the average indices of 
three typical African crania of unknown tribes, which I have recently 
measured at the College of Surgeons. They are as follows :— 
Bi, . . . 706, and therefore extremely dolicocephalic. 
PRE es TAG A hypsicephalie. 
Ai, . . . 1052, very prognathous. 
Ni, . . -. 4581, very platyrhine. 
Oi; =. .| 880, mesoseme. 
It will be seen that the two Cabenda crania A and B show con- 
siderable uniformity in all their indices; their most marked common 
character being the absolute absence of prognathism. Although their 
alveolar indices could not be accurately taken, as I have mentioned 
Length, L; Breadth, B; Breadth index = ‘‘ Cephalic index’’, Bi; Height, H; 
Height index, Hi; Basi-nasal distance, BN ; Basi-alveolar distance, BA ; Alveolar 
index, Ai; Nasal height, Nh; Nasal width, Nw; Nasal index, Ni; Orbital 
width, Ow; Orbital height, O h; Orbital index, O01; Capacity of cranium, Ca. 
