612 



Journal of Agricultural Research vol. vi. NO. 16 



Seissl (32) experimented with a large number of plants in various 

 stages of growth and found a slight fluctuation in the ratio of calcium 

 to magnesium in the ash analyzed in the different years. In nearly 

 every instance there was a progressive increase in the ratio of the lime 

 to the magnesia content towards autumn. In only two cases was the 

 lime content greater than that of the magnesia. 



TABLE XX. Composition of soybeans at different periods of growth 



