188 Dr. Jeffries on the Skeleton of an Ourang Outang. 
The ilea, ischia, and pubes, are distinct bones, connected 
by cartilage. The symphysis pubis is also cartilaginous. 
The lateral diameter of the pelvis is two and a half inches. 
The longitudinal diameter is three and a quarter inches. 
The pelvis is so joined to the spine as to project backward, 
and so flat, that a perpendicular line from the bodies of the 
dorsal vertebrz falls upon the pubis. 
The coccyx is cartilaginous, and resembles the human ; it 
is not so long, and has no appearance of a tail. 
The ribs are twelve in number, articulated and curved as 
much as the human, giving the animal a full chest. 
There were eight true ribs attached to the sternum by car- 
tilage, as in man, and four floating ribs. 
The sternum consists of four bones like man’s, but more 
cartilaginous; the ensiformis longer. 
The clavicle remarkably resembles the human; it is not - 
quite so much bent, and measures five and a half inches. 
The scapule likewise resemble those of man; the base is 
narrower and longer; the acromion and coracoid processes 
are more cartilaginous than those of a child. 
The chest gives the animal the greatest resemblance to man; 
the position of the shoulders, the articulations of the humerus, 
clavicle, and. scapula, the angle of the ribs, the prominent 
thorax, the situation of the arms, all so much resemble the 
human, that they might easily pass for such. 
The length of the humerus is eleven and a quarter inches ; 
the head of the bone is cartilaginous; it is articulated like the 
human; on the lower part it is thinner and flatter than man’s; 
the condyles are prominent and cartilaginous; the radius is 
eleven inches in length; it is somewhat curved anteriorly, in 
other respects it resembles the human. 
The ulna is eleven and a half inches long; it has a large 
curved projection at the lower-part for the insertion of mus- 
cles. 
The bones of the carpus are eight in number, and resemble 
the human, except that they are all longer and a little narrower, 
more cartilaginous, and admit of more free motion upon one 
another. 
The bones of the metacarpus are five in number, each about 
three inches in length, except that of the thumb, which is an 
inch and three quarters. 
The thumb has two bones, and is an inch and a half in 
length. 
The phalanx of the fore finger is four inches long, that of 
the middle and ring fingers, four and a half inches; the little 
finger is three and a half inches. 
The 
