432 A Stud// of the Nasal Bridge in the Anthropoid Apes 
positively correlated. In order to test this point a little more definitely, let us 
suppose SB to be the breadth of a nasal bone and DB the breadth of the maxillary 
wall at the bridge. Approximately : 
SB = »J±(SCy- + (SSy- = (SS)fsin <f>', 
DB = Vi(2)C - SCf + (DS - SS)' = (DS- &S)/sin </>. 
Table XXVII gives the values of SB and DB found for each race from the 
means of that race for SC, SS, DC and DS. Of course the nasal bone and the 
TABLE XXVII. 
Calculated* Values of SB, the breadth of either nasal bone at the bridge 
and DB, the breadth of the maxillary portion of the nasal wall at the 
bridge. 
llace 
? 
SB 
DB 
SB 
DB 
Congo 
5-44 
9-83 
5-37 
9-21 
Gaboon, 1864 
5-48 
9-82 
5-53 
9-53 
Gaboon, 1880 
4-59 
10-54 
5-12 
9-71 
Philippines 
4-91 
8-36 
5-14 
8-06 
Moluccas ... 
5-28 
9-12 
Borneo 
4-51 
9-33 
4-54 
8-09 
Malays 
4-69 
9-40 
Celebes 
5-05 
9-34 
Sumatra 
5-71 
8-94 
Javanese 
5-33 
9-23 
511 
7-64 
Nubians 
6-64 
10-22 
6-60 
8-60 
Ainos 
5-80 
8-96 
Hindoos 
5-67 
8-73 
4-91 
8-32 
English 
6-56 
9-56 
6-10 
8-77 
Egyptians ... 
6-97 
9-49 
6-67 
8-39 
Veddahs 
5-98 
9-29 
5-19 
9-17 
Chimpanzees 
4-52 
6-41 
4-24 
5-91 
Gorillas 
4-41 
9-97 
3-81 
9-61 
Orang-utans 
[13-57] 
[11-02] 
Hy I abates ( ^ + $ ) 
2-70 
4-27 
2-70 
4-27 
Symphalangy^ (c? + ? ) ... 
3-11 
4-86 
3-11 
4-86 
maxillary wall are often, as our contours (pp. 428 — 9) show, considerably curved, 
but the chord of these arcs will indicate, at any rate approximately, what is the 
nature of the interracial correlations. Omitting Hylobates and Symphalangia as 
unsexed and the Orangs we find : 
Interracial correlation of nasal bone and maxillary wall 
Males +-238, Females + -215. 
* These values are really the hypotenuses or chords corresponding to the nasal and maxillary 
portions of the bridge of the nose, and these portions are often curved. 
