According to the statistics of the United States Government, a comparison of the last five years reported in this century with the last five years of the old century, shows, by these two five-year averages, that our annual production of wheat has increased from about five hundred million to seven hundred million bushels: that our annual production of corn has increased from two and one-quarter billion to two and three-quarter billion bushels; that our wheat exports have decreased from thirty-seven per cent. to seventeen per cent. of our total production; that our corn exports have decreased from nine per cent. to three per cent. of our total production; and yet the average price of wheat, by the five-year periods, has increased thirty-one per cent., and the average price of corn has increased ninety-one per cent., during the same period. The latest Year Book of the Department of Agriculture (1908 ) furnishes the average yields of wheat and corn for four successive ten-year periods, from 1866 to 1905. By combining these into two twenty-year periods this record of forty years shows that the average yield of wheat for the United States increased one bushel per acre, while the average yield of corn decreased one and one-half bushels per acre, according to these two twenty-year averages. If we consider only the statistics for the North-Central states, extending from Ohio to Kansas and from "Egypt" to Canada, the same forty-year record shows the average yield of wheat to have increased one-half bushel per acre, while the average yield of corn decreased two bushels per acre. Thus, notwithstanding the great areas of rich virgin soils brought under cultivation in the West and Northwest during the last forty years, notwithstanding the abandonment of great areas of wornout lands in the East and Southeast during the same years, notwithstanding the enormous extension of dredge ditching and tile drainage, and, notwithstanding the marked improvement in seed and in the implements of cultivation, the average yield per acre of the two great grain crops of the United States has not even been maintained, the decrease in corn being greater than the increase in wheat, and not only for the entire United States, but also for the great new states of the corn belt and wheat belt. ( Seasonal variations are so great that shorter periods than twenty-year averages cannot be considered trustworthy for yield per acre.)