U THE STRUCTURE OF THE FOWL 



tions — have an uncinate 2^^'ocess projecting 

 backwards over the outer surface of the next 

 rib and connected therewith by a hgament. 

 Tlie distal end of the sternal segment has an 

 articular eminence which fits into a depression 

 on the edge of the sternum. 



The sternum, or breast-bone (Fig. 2), may 



Fig. 2. — Lateral View of the Sternum. 



R., rostrum ; P-L.P., posterior lateral process ; O.P., oblique process ; 

 M., metastermun ; S.C., sternal crest. 



be described as a quadrilateral, curved plate 

 with processes projecting from each angle and 

 from the middle of the cranial and caudal 

 borders. The caudal medial projection or 

 metasternum is the longest, and has a tall 

 plate -like ridge — the sternal crest — running 

 along its ventral surface. The crest serves 

 the important function of increasing the bony 



