COLD AFFECTING MAN. 179 



It is not so much the lowering of the tempera- 

 ture without, as the amount of heat carried off 

 from the body, that affects the feelings. This loss 

 of heat increases so much the more, the oftener the 

 small quantity of air is changed, which at every 

 instant is touching the body. Hence it is that the 

 wind robs the human body of more heat, although 

 the mercury of the thermometer may not fall very 

 much, than a far greater degree of cold in still air 

 does. Our clothes, which in themselves are quite 

 devoid of warming power, can give us but little 

 protection against the cold, except by retarding the 

 change of the air, which is the only way by winch 

 the cold makes itself felt. Thus, as you well know, 

 garments that are pretty loose and full are warmer 

 than such as are light and close-fitting, because the 

 former shut in a layer of air between the body and 

 the outer covering. 



You will get a clear notion of the great influence 

 of the large oceans upon the climate of the neigh- 

 bouring lands from the following table. 



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