When alkali soil is leached with water, the amount of calcium in water extracts is always less than in the case of normal soil. With increased dilution there is a definite increase in the amount of calcium given out, yet the quantity is not very great. When water is added in increasing amounts to the normal soil, there is no increase in pH values of the successive filtrates and the pH of the distilled water is easily obtained, whilst the pH value of the alkali soils falls very gradually to a pH of 7.6. The amount -CO₃ ions in the extracts gradually decreases with concomitant decrease in pH values. The amount of bicarbonates at first increases gradually and then falls. A gradual decrease in pH values also takes place with repeated washings with distilled water.