EXrEIlIMENT STATION BULLETINS. 



709 



TABLE 19.— RATE AND EXTENT OF SOLUBILITY OF BROWN SILT LOAM TREATED 

 WITH ACIDS AND THEN WASHED UNTIL ALL FREE SOLUBLE ACIDS WERE ELIMI- 

 NATED. RATIO OF SOIL TO WATER WAS 1 TO .70 AND MIXTURE MAINTAINED AT 

 ROOM TEMPERATURE. FIGURES REPRESENT FREEZING POINT DEPRESSION. 



TABLE 20.— RATE AND EXTENT OF SOLUBILITY OF FINE SANDY LOAM TREATED 

 WITH ACIDS AND THEN WASHED UNTIL ALL FREE SOLUBLE ACIDS WERE ELIMI- 

 NATED. RATIO OF SOIL TO WATER WAS 1 TO 0.5 AND MIXTURE MAINTAINED AT 

 ROOM TEMPERATURE. FIGURES REPRESENT FREEZING POINT DEPRESSION. 



