IIO RECLAIMING LOST NITROGEN. 
the air. But by proper treatment this loss can be reduced to 
a minimum and there may always be a surplus of gain. Even 
taking into account all the nitrogen loss that comes from these 
processes the use of a leguminous crop upon a soil poor in nitrogen 
furnishes to that soil for the next crop a store of nitrogen considerably 
in excess of that which it possessed before. 
