Fig. 295. — Skeleton of a 

 fowl. 

 I, Premaxillan- bone 

 or upper jaw; 2, maxilla 

 or lower jaw; 3, jugal 

 bone; 4, nasal cavity; 

 5, eye cavity; 6, skull; 

 7, neck vertebrae; 8, 

 scapula; 9, humerus; 10, 

 clavicles (wishbone) ; 11, 

 ulna; 12, radius; 13, 

 bones of forewing; 14, backbone; 15, ribs; 16, ilium; 17, pygostyle or tail 

 bones; 18, breastbone; 19, ischium; 20, pubis; 21, sternum; 22, keel; 23, femur; 

 24, tibia; 25, tarso-metatarsus ; 26, spur; 27, digits or toes; 28, rear toe. 



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