10 



ANATOMY. 



The short bones are usually short in form, as the name im- 

 plies. They have no medullary canal ; example — carpals and tar- 

 sals. 



Flat bones are those like the bones of the skull and the ribs, 

 which consist of two plates of hard bony tissue connected by 

 spongv bone. 



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FIG. 3. SIX YEARS, LOWER JAW. 



FIG. 4. EIGHT YEARS, UPPER JAW. 

 Note. -Figures 4 and r> arc drawn on different scales. 



Irregular bones are usually found in the median line; example 

 — vertebrae. 



Peculiarities. —Used in describing and recognizing bones are: 

 Elevations, depressions, borders, surfaces, angles, and extremities. 



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