STOVES. 53 



A. In order that the air, on the lower 

 part of the room, may be heated by the 

 fire. 



Q. Would not the air of the lower part of a 

 room be heated equally well, if the stoves were fixed 

 higher up ? 



A. No ; the heat of a fire has a very 

 little effect upon the air below the level of 

 the grate; and, therefore, every grate 

 should be as near to the floor as 

 possible. 



Q. Why are our FEET so COLD when we sit 

 tlose by a good fire ? 



A. As the fire consumes the air 

 which passes over it, cold air rushes 

 through the crevices of the doors and 

 windows along the bottom of the room 

 to supply the deficiency; and these 

 currents of cold air, rushing constantly 

 over our feet, deprive them of their 

 warmth. 



Q. If a piece of PAPER be laid FLAT on a clear 

 Jire, it will NOT BLAZE, but CHAR. Why so ? 



A. The carbon of a clear fire, being 

 sufficiently hot to unite with the oxygen 

 of the air, produces carbonic acid gas, 



F3 



