PREFACE. 



THE study of the human frame has usually 

 been confined to the members of the medical 

 profession. But wherefore ? Why should not 

 a subject which so nearly concerns us all, engage 

 the attention of others as well as surgeons and 

 physicians? Do we not carry about with us, 

 through life, a machine so ingeniously con- 

 structed, that in view of it, even an inspired 

 writer exclaimed, " I am fearfully and wonder- 

 fully made ? " 



Our minds, moreover, are the tenants of bodies 

 so constructed as to be continually liable to 

 waste, as well as to become disordered ; and yet 

 we are neither taught the way to keep them in 

 order nor to prevent them from premature decay. 

 These bodies act also upon our minds in a won- 

 derful manner ; for if anything in the body is 

 wrong, it affects either our thoughts or our feel- 

 ings, or both. 



To keep the mind and heart right, therefore, 

 we should know how to keep the body right. 

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