God Arises
        
        
          Nature and Science Speak about God
        
        
          ~ 156 ~
        
        
          of electrical energy on the atmosphere, which
        
        
          dissociates nitrogen and oxygen molecules, allows
        
        
          the free atoms to form nitric oxide and nitrogen
        
        
          dioxide, and this nitrogen compound is brought
        
        
          down by rainfall to our fields. The amount of nitrate
        
        
          obtained from nitrogen by this means, according to
        
        
          one estimate, is five pounds per acre of soil, in each
        
        
          year. This quantity is equal to 30 pounds of sodium
        
        
          nitrate.
        
        
          13
        
        
          Both these sources have proved inadequate in
        
        
          meeting the nitrogen requirements of man, for
        
        
          fields which are repeatedly cultivated over long
        
        
          periods eventually run short of nitrogen. Hence the
        
        
          practice of crop rotation by farmers. Owning to an
        
        
          increase in population and intensive cultivation at
        
        
          the beginning of the present century, a general
        
        
          deficiency of nitrogen compound began to make
        
        
          itself felt and man appeared to be heading for a
        
        
          prolonged period of famine. It is strangely
        
        
          significant that, at such a critical time, we
        
        
          discovered the method of artificially preparing this
        
        
          compound from the air. One of the several different
        
        
          essays in this field entailed the artificial causation of
        
        
          thunder and lightning in the atmosphere. A force of