Elements of biology; a practical Elements of biology; a practical text-book correlating botany, zoology, and human physiology elementsofbiolog00hunt Year: [c1907] -^^ / ^ i '%%%%%%%%%%%%%%%%. WHEAT \ /60 to 640 bushels per sauare mile '\ over 640 » « „ . 't Wheat Crop in United States—Percentage Source 20 30 40 50 M 7,0 30 90 Minnesota Kansas Neb. O. Other States planted without clearing or plowing the soil. There was no need of thresn- ing or winnowing. Sown in tilled land, it yields more than twice as much food per acre as any other kind of grain. This was of
Elements of biology; a practical Elements of biology; a practical text-book correlating botany, zoology, and human physiology elementsofbiolog00hunt Year: [c1907] -^^ / ^ i '%%%%%%%%%%%%%%%%. WHEAT \ /60 to 640 bushels per sauare mile '\ over 640 » « „ . 't Wheat Crop in United States—Percentage Source 20 30 40 50 M 7,0 30 90 Minnesota Kansas Neb. O. Other States planted without clearing or plowing the soil. There was no need of thresn- ing or winnowing. Sown in tilled land, it yields more than twice as much food per acre as any other kind of grain. This was of incalculable advantage to the English settlers in New England, who would have found it much harder to gain a secure foothold upon the soil if they had had to begin by preparing it for wheat or rye.' To-day, in spite of the great wealth which comes from our mineral resources, live stock, and manufactured products, the surest index of our country's prosperity is the size of the wheat and com crop. According to the last census, the amount of capital invested in agriculture was over twenty billion dollars, while that invested in manufactures was less than one half that amount.
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