TEMPERATURE OF APARTMENTS. 241 



that heat, and keeping it at just such a point, 

 with scarcely any perceivable variation. 



The heat of the human body is never far 

 from 98 of Fahrenheit's thermometer. By 

 this we mean, that if you could plunge the 

 bulb of the thermometer, containing the quick- 

 silver or mercury, into the flesh of the body, 

 or even hold it in your mouth, the mercury 

 would rise in the tube till it got to about 98, 

 and then stop. 



Now why does this heat continue nearly the 

 same at all times, and in all places ? If you 

 were to take a piece of wood or iron, about 

 the size and shape of a man, heated to 98, 

 and set it up in Greenland or Lapland, where 

 it is so cold that the mercury would sink to 

 20 in the open air, do you think this iron 

 would remain heated to 98 ? Would not the 

 air cool it down to about 20 ? How would it 

 be with a man of wood or straw? How, even 

 with the body of a dead man ? 



Does any one suppose that the body of a dead 



man heated about as hot as that of a living 



man, and put out in the open air of Greenland, 



would remain so warm very long ? Then why 



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