132 MASS. EXPKUIMKXT STATION lUT.LKriN ^Tli 



Plot 11 is a limed plot to which sulfuric and orthophosphoric acids were applied in 

 1926. 



rv: Jii 



Plot 12 is a liaued plot without acidification. 



Fig. 2.- Growth of Tobacco in 1926 on Limed Plots with and without Soil 

 Acidification. (Photographed August 1.) 



