WIND. 177 



A. Because a great quantity of air 

 lurks entangled between their fibres; and 

 air is a very bad conductor of heat. 



Q. If AIR be a BAD CONDUCTOR of heat, 

 why should we not feel as warm WITHOUT clothing, 

 as when we are wrapped in wool and fur ? 



A. Because the air (which is cooler 

 than our body) is never at rest; and, 

 therefore, fresh particles (perpetually 

 passing over our body) keep drawing 

 off the heat little by little. 



Q. Why does the ceaseless c RANGE of air tend 

 to DECREASE the WARMTH of a naked body ? 



A. Thus : the air which cases 

 the body absorbs as much heat from it as 

 it can, while it remains in contact ; it is 

 then blown away, and makes room for a 

 fresh coat of air, which does the same. 



Q. Does the AIR (which encases a naked 

 body) become by contact as WARM as the BODY 

 itself? 



A. It would do so, if it remained 

 motionless ; but as it remains only a very 

 short time, it absorbs as much heat as it 

 can in the time, and passes on. 



Q. Why do we feel COLDER in WINDY 

 WEATHER, than in a CALM day ? 



