The potash industry has not been revived in the United States thus far, and the great bulk of the potash salts now used are imported. The following table (by Phalen) shows the magnitude of the importation of potash salts for the years 1900, 1905, and 1910: —

Imports of potash salts for the calendar years 1900, 1905, and 1910, in pounds1.

[Figures from Bureau of Statistics]

1 This table is based on total imports for the calendar year, not on imports for consumption for the calendar year.

2 These figures are for the fiscal years.

Potassic materials produced by the aid of electricity

Among the chemicals produced by the aid of electricity are potassium chlorate and potassium hydroxid. The following table gives the quantity and value of the potassium salts made electrolytically at the censuses of 1900 and 1905, with the amount and percentage of increase (Phalen): —