26 



ANATOMY OF THE DOMESTIC FOWL 



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FIG. 5. Bones of the head and vertebra. 



Part I. i, The cranium. 2, The skull cap. 3, The ethmoid bone. 4, The 

 inferior maxilla. 5, The palatine bone. 6, The quadrato-jugal. 7, The jugal. 

 8, The superior maxilla. 9, The premaxilla. 10, The horny covering for the 

 premaxilla. u, The horny covering for the os dentale. 12, The os quadratum. 

 13, The nasal bone. 14, The pterygoid. 



Part II. i, The os occipitale (i, dorsal; 2, two lateral; 3, ventral portions 

 and 4, foramen magnum) . 2, The fourteen cervical vertebrae, (i, atlas; 2, axis) . 

 3, The seven dorsal vertebrae. 4, The fourteen lumbo-sacral vertebrae. 5, The 

 seven coccygeal vertebrae. 6, The pelvis (i, ilium; 2, ischium; 3, pubis; 4, cotyloid 

 cavity or acetabulum). 7, The vertebral column complete from the baby chick. 

 8, The parietal bone. 9, The temporal bone. 10, The frontal bone. 



