METHOD OF HEATING 171 
say one inch in ten feet, from as near the heater as 
practical. For all this work second-hand piping, 
newly threaded, will answer very well, and it may 
be bought for about four cents per foot for one-inch 
pipe; six cents for one and one-half inch, and eight 
cents for two-inch. In putting the stove or heater 
in place, it should be sunk below the level upon 
which the pipes will run, and attention should also 
be given to the matter of caring for the fire, remov- 
ing ashes, etc., making the management of these 
things as convenient as possible. 
