This plate shows the increase of organic bases (N. in phos. tungstic ppt.), especially 

 arginin, in the shoots of Pinus Thunlxrrgii by the addition of ammonium salts. The 

 Mack lines refer to shoots treated with half saturated gypsum solution in the full day- 

 light and the red lines to those treated with 0.5% ammonium chloride solution, half 

 saturated with gypsum in the full day light. 



