532 Dr. WALTER ADAM on the 
eight times the breadth of the broadest rib, and equal to the 
length of the cubitus from the summit of the olecranon to the 
carpal articulation. 
The sum of the breadths of the ribs where broadest and the 
ulnar length of the cubitus, the longest bone in the body of the 
Camel, exceed the greatest width of the chest by the common 
difference of the 4 longitudinal dimensions of the cranium. 
The width of the chest, as stated below, is equal to the greatest 
length of the head. "The costal breadths and the length of the 
cubitus are therefore 5th proportionals to the 4 longitudinal 
dimensions of the cranium. 
It will be observed in the Tables, that the ribs on the right 
side have been more ossified than those on the left. 
Of the Cavity of the Thorax and of the Sternum. 
The cartilages of the ribs being entire in the animal examined, 
the dimensions of the cavity of the chest are seen to agree with 
those of the separate bones of the body. 
The greatest width of the chest is equal to the greatest length 
of the head. 
The length of the sternum is three fourths of the greatest 
thickness of the body, namely, from the caudal end of the 
sternum to the summit of the hump at the 6th dorsal ver- 
tebra. E | 
The length of the caudal portion of the sternum is twice the 
length of the 3rd and of the 5th portions; and is equal to the 
distance between the inner margins of the orbits. 
The rostral breadth of the caudal portion of the sternum is 
twice its caudal breadth, and also twice its rostral thickness. 
The thicknesses of the other portions of the sternum increase 
by regular augments as they approach the caudal portion. 
Of 
