WIND. 181 



A. Because every fresh gust of air 

 absorbs a fresh portion of heat ; and the 

 more rapid the succession of gusts, the 

 greater will be the quantity of air 

 absorbed. 



Q. If the AIB were HOTTER than our body, 

 would the WIND feel COOL? 



A. No; if the air were hotter than 

 our body, it would feel insufferably hot. 



Q. Why would the AIR feel INTENSELY HOT, 

 if it were WARMER than our BLOOD ? 



A. Because then the wind would 

 add to the heat of our body, instead of 

 diminishing it. 



Q. Is the AIR EVER as HOT as the human BODY ? 



A. Not in this country: in the hottest 

 summer's day, the air is always 10 or 12 

 degrees cooler than the human body. 



Q Is the EARTH a GOOD CONDUCTOR of heat ? 



A. No ; the power of conducting heat 

 depends upon the continuity of matter ; 

 if the particles of which a thing is com- 

 posed are not continuous, they have very 

 little power to conduct heat. 



Q. Why is the earth (BELOW the SURFACE) 

 WARMER in WINTER than the surface itself? 



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