86 
ANATOMY AND PHYSIOLOGY 
OF THE STERNUM. 
The sternum is formed of three bones and a small 
ensiform portion ; the anterior piece is of a broad irregu- 
lar figure, is by much the largest of the three, is placed 
in an oblique direction, and is hollowed out like a bird’s 
interiorly ; it is 3 feet 7| inches in width, and in length 
2 feet 10| inches— 'this anterior piece is perforated in 
its middle by an oblong opening 1 foot 2 inches in 
length, and inches in width ; the second piece is 
much smaller than the first, it is flat and irregular in 
form, and is in length 1 foot 1 inch, and in breadth 
11 inches ; the third piece expands very much, is more 
hollowed interiorly than the first , and measures in 
width 1 foot 8| inches, and is in length 1 foot 5| inches, 
and is in form something like the breast of a turtle. 
The ensiform portion is 12 inches in length, and 9 inches 
in breadth at its widest part, making the whole length 
of the sternum to consist of 6 feet 5 inches, and in 
breadth at its widest part 3 feet 7| inches. 
OF THE SCAPULA. 
There are no clavicles. The scapula forms a flat 
triangular piece, with the apex downwards ; it has no 
spines, but there are two projecting eorocoid-like pro- 
cesses, situated at the lower part of its anterior angle, 
near to where it is articulated with the humerus : the 
scapula is 2 feet 9 inches in width at its upper edge, 
and its neck is 10 inches in width at its narrowest 
