The second great measure of the Commission is to increase to five cents the tax on cotton, which has, since the close of our last financial year, begun to aid our revenue. The soil, climate, and seasons of our Southern States are peculiarly adapted to the culture of cotton. In India the fields are parched by the extreme heats of summer, and the staple shortened; in Algiers, the rains of autumn, which favor the young wheat, prevent the opening of the cotton-balls; but in the cotton States of the South, the moisture of the spring, the heats and showers of summer, and the dry weather and late frosts of autumn, all contribute to the full development of the cotton-plant; and the yield is twice or three times as great as in the cotton districts of the East. The staple, too, is much more valuable, and the yield and the quality of the staple are both improved by the application of guano. In 1859 the yield of the United States rose to 2,080,000,000 pounds, while the consumption of the civilized world was as follows:-- In Great Britain, 1,050,000,000 lbs. On the Continent, 700,000,000 " In the United States, 400,000,000 " ------------- Total, 2,150,000,000 lbs. During the five years of war, the consumption was reduced more than one half by the deficiency; Great Britain was compelled to pay twice the usual amount for half the usual quantity, and cotton rose from ten cents to sixty cents in gold. The world was ransacked for cotton, and the whole addition made to the supply (chiefly from India and Egypt) did not exceed the increase of three years in the United States previous to the war. The Revenue Commission have made a very elaborate report upon this subject, and base their conclusions upon the advice and opinions of the chief manufacturers of New England, who concur in the opinion that the tax will be chiefly paid by the foreign consumer; that it will not give an undue stimulus to the culture of cotton abroad; that Japan and China have, since the decline of cotton to twenty pence in England, ceased to ship it, and are drawing upon Surat and Bombay; that Egypt, our chief rival, has nearly or quite reached her full capacity of production, while India makes little progress.