[18] O. S.
[19] Quar. Jour. of Economics, Vol. XVII, p. 1.
[20] The excess of import duty over the domestic revenue tax.
[21] When exported, of course.
[22] Roy G. Blakey, Ph. D. The United States Beet Sugar Industry and the Tariff, Columbia University, 1912.
[23] Actual production in sugar.
[24] Mark = 23.8 cents U. S. coin.
[25] Ruble = 51 cents.
[26] Pood = 36.07 pounds.
[27] Six francs and five and one-half francs, respectively, per 100 kilograms.