January, 1922 



GROWTH OF TREE SEEDLINGS AND WHEAT 



11 



flats had been set out, received the effects of the higher alkalinities before 

 there had been much decrease. On June 11, the day after transplanting, the 

 sugar maples on the limed soils had dropped their leaves to a vertical position, 

 one on the limed humus had already died, and but one plant had its leaves 

 horizontal, and that was on limed sand. On the unlimed soils the leaves were 

 horizontal except for a few which were at 45 degrees. By June 15 all the 

 maples on the limed soils, except two on the sand, were dead, while all on the 



JmeTB IS July 8 



28 Aug.7 



27 5ept6 



Fig. 6. Rate of growth in height on heavily lined soils, pitch pine, Jack pine and 

 red pine seedlings. Shows the injurious effects of alkalinity, and its nullifying the 

 benefits of the humus. Compare with figures i and 2 (remembering that figs, i and 

 2 are reduced about twice as much as fig. 6). 



