374 
MR.  R.  OWEN  ON  THE  OSTEOLOGY  OF 
Table  of  Admeasurements. 
Adult  Chim- 
panzee. 
Young  Chim- 
panzee. 
Adult  Orangl, 
Fcem. 
ft 
lin. 
ft. 
in. 
lin. 
ft. 
in. 
lin. 
ft. 
in. 
Un. 
3 
10 
0 
2 
0 
0 
4 
X 
6 
2 
7 
1 
0 
3 
6 
0 
2 
10 
0 
3 
7 
0 
3 
5 
1 
9 
3 
0 
10 
5 
1 
11 
6 
1 
3 
0 
0 
7 
3 
0 
4 
4 
0 
7 
6 
0 
6 
1 
0 
5 
3 
0 
3 
4 
0 
4 
7 
0 
4 
4 
0 
4 
4 
0 
2 
4 
0 
4 
4 
0 
3 
3 
0 
4 
6 
0 
3 
5 
0 
5 
4 
0 
4 
6 
u 
o 
Q 
0 
(\ 
u 
o 
u 
/; 
D 
n 
u 
D 
u 
o 
Q 
y 
u 
o 
A 
u 
o 
Q 
O 
U 
0 
0 
2 
6 
0 
2 
> 
J-J- 
0 
2 
7 
0 
2 
6 
0 
1 
10 
0 
3 
0 
0 
0 
6 
0 
3 
0 
0 
4 
8 
0 
3 
2 
0 
6 
0 
0 
4 
5 
0 
1 
9 
0 
1 
3 
0 
2 
6 
0 
2 
0 
u 
1 
0 
4 
0 
0 
2 
9 
0 
4 
2 
0 
3 
7 
0 
0 
7 
0 
0 
4 
0 
0 
5 
0 
0 
3 
0 
1 
6 
0 
1 
2 
0 
1 
4 
0 
1 
4 
0 
1 
3 
0 
1 
1 
0 
1 
6i 
0 
1 
5 
u 
1 
U 
u 
0 
7i 
0 
1 
1 
1 
u 
1 
0 
0 
1 
14- 
0 
0 
7 
0 
1 
6 
0 
1 
0 
0 
2 
1 
0 
1 
6 
0 
1 
8 
0 
1 
8 
0 
2 
4 
0 
1 
3 
0 
2 
4 
0 
1 
7 
0 
2 
6 
0 
1 
7 
0 
2 
7 
0 
1 
9 
0 
2 
10 
0 
1 
9 
0 
3 
3 
0 
2 
g 
0 
0 
10 
0 
0 
5 
0 
1 
3 
0 
0 
7 
0 
0 
6 
0 
0 
4 
0 
0 
8 
0 
0 
74 
0 
0 
5 
0 
0 
3 
0 
0 
5 
0 
0 
3i 
0 
1 
6 
0 
1 
3i 
0 
1 
6 
0 
1 
3 
0 
1 
9 
0 
1 
1 
0 
2 
0 
0 
1 
4 
0 
0 
3 
0 
1 
2 
0 
0 
4 
0 
0 
0 
0 
3 
0 
0 
9 
0 
0 
3i 
0 
0 
3 
0 
0 
1 
0 
0 
3i 
0 
0 
3 
0 
2 
44- 
0 
1 
5 
0 
2 
9 
0 
2 
1 
0 
5 
0 
0 
3 
5 
0 
6 
2 
0 
4 
7 
0 
3 
3 
0 
2 
7 
0 
5 
6 
0 
3 
10 
0 
2 
5 
0 
1 
3 
0 
3 
10 
0 
2 
5 
0 
1 
10 
0 
2 
1 
0 
3 
9 
0 
2 
10 
0 
1 
10 
0 
0 
11 
0 
2 
3 
0 
1 
6 
0 
1 
10 
0 
1 
4 
0 
1 
11 
0 
1 
7 
0 
1 
4 
0 
1 
3 
0 
1 
5 
0 
1 
0 
0 
0 
4 
0 
0 
3 
0 
0 
8 
0 
0 
34 
0 
0 
7 
0 
0 
4 
0 
1 
2 
0 
0 
4 
0 
2 
0 
0 
1 
0 
0 
2 
4 
0 
1 
2 
Length  of  the  body  from  the  vertex  to  the  base  of  the  os  calcis 
Length  of  the  head  from  the  vertex  to  the  base  of  the  occipital  "1 
condyle   / 
Length  of  the  spinal  column  
Length  of  the  posterior  part  of  the  occipital  ridge  
Length  of  the  head  from  the  inion,  or  posterior  plane  of  the  1 
occiput,  to  the  margin  of  the  incisors  j 
Length  of  the  head  from  the  inion  to  the  fronto-nasal  suture. . 
Length  of  the  head  from  the  fronto-nasal  suture  to  the  margin  1 
of  the  incisors  / 
Length  of  the  greatest  lateral  diameter  of  the  cranium  at  the  1 
post- auditory  ridges  J 
Length  of  the  smallest  lateral  diameter  of  the  cranium  behind  1 
the  orbits   j 
Length  of  the  os  frontis   
Length  of  the  sagittal  suture   
Distance  between  the  temporal  ridges  
Diameter  of  the  face  at  the  zygomata  
Length  of  the  zygomatic  fossa   
Breadth  of  the  zygomatic  fossa   
Diameter  of  the  face  taken  from  the  outsides  of  the  orbits. . . . 
Interorbital  space  
Lateral  diameter  of  the  orbit   
Perpendicular  diameter  of  the  orbit  , .  . . 
Transverse  diameter  of  the  nasal  aperture  
Perpendicular  diameter  of  the  nasal  aperture  
Distance  between  the  infra-orbital  foramina   
Breadth  of  the  alveolar  portion  of  the  maxilla  superior  
Distance  from  the  inferior  margin  of  the  nasal  bone  to  the  in- 1 
ferior  margin  of  the  intermaxillary  bones  j 
Length  of  the  bony  palate   
Distance  from  the  anterior  margin  of  the  intermaxillary  bones  1 
to  the  anterior  palatal  ybrawiera  j 
Breadth  or  antero-posterior  extent  of  the  palatal  process  of  1 
the  palate  bone  J 
Breadth  of  the  crown  of  the  first  incisor  
Breadth  of  the  crown  of  the  second  incisor  
Breadth  of  the  four  incisors  
Length  of  the  grinding-surface  of  aU  the  molares,  the  bicus- 1 
pides  included  j 
Length  of  the  crown  of  the  canine  tooth  
Breadth  of  the  enamelled  crown  of  the  canine  tooth  
Interspace  between  the  canine  and  incisor  teeth,  upper  jaw  . . 
Distance  from  the  anterior  margin  of  the  occipital  foramen  to  \ 
the  posterior  margin  of  the  bony  palate  j 
Length  of  the  lower  jaw  (from  the  condyle  to  the  symphysis). . 
Length  from  the  angle  to  the  symphysis  
Length  from  the  angle  to  the  condyle  
Breadth  between  the  angles  
Breadth  of  the  ramus  
Breadth  between  the  mental /oramiBS   
Breadth  of  the  four  incisors  
Breadth  of  the  canine  tooth  „  
Length  of  the  enamelled  crown  of  the  canine  tooth   
Length  of  the  grinding  surface  of  the  molares   
'  The  admeasurements  in  this  column  are  taken,  by  permission  of  the  Board  of  Curators,  from  the  skeleton  in 
the  Museum  of  the  Royal  College  of  Surgeons,  in  which  the  absence  of  the  cranial  ridges,  and  some  still  sepa- 
rated epiphyses,  would  indicate  the  non- attainment  of  full  growth. 
