REVIEW. J03 



neck has seven ; but as these form the upper 

 part of the spine, they are usually reckoned 

 with those of the body. 



The spine, or back bone, contains twenty- 

 four pieces, called vertebrae ; and between 

 these and the lower extremities are four bones 

 more. There are twenty-four ribs, that is, 

 twelve on each side, and a breast bone, or 

 sternum. Thus the whole of what we pro- 

 perly call the body, has fifty-three bones. 



The whole upper extremity, including the 

 hand, arm, clavicle or collar bone, and scapula 

 or shoulder blade, consists of thirty-two pieces ; 

 or sixty-four on both sides. 



Each lower extremity includes thirty bones ; 

 or both of them sixty ; besides the small 

 sesamoid bones. 



Now if we add up these several sums, we 

 shall find the amount two hundred and forty. 

 A complete human skeleton, then, would con- 

 tain no less than two hundred and forty bones ! 

 Who would suppose so, from a mere view of 

 an individual, while in the act of standing? 

 But when we come to see him walking or in 

 motion otherwise, we begin to find he has a 



