RIGHT USE OF LIME IN SOIL IMPROVEMENT 



is heated to a dull red glow. The burning 

 goes on slowly for several days, the interior 

 often being hot for several weeks. When 

 the lower portion of the heap has reached 

 an advanced stage of calcination, a portion 

 of the outer layer of lime sometimes slips 

 down ; if so, a fresh covering of earth must 

 promptly be applied at the exposed point; 

 otherwise it will serve as a vent for the heat, 

 and the top and other sides will fail of 

 proper calcination." 



