OSSEOUS SYSTEM OF MAMMALIA. 



The first thing that strikes us, on contemplating the human skeleton, 

 is its express adaptation for the erect attitude, and a bipedal mode of pro- 



14 



gression ; the two superior extremities being free. With this adaptation, 

 as exhibited by the limbs, are combined the condition of the whole of 

 the osseous structure, and, in accordance therewith, the disposition of the 

 muscular and ligamentary systems. 



