Contents x 7. Lesser Importations ... 86 Sugar crops . 86 Fruits .. 89 Vegetables 90 Tropical plants . 91 Pasture and forage crops 92 Trees .. 94 8. Plant Introduction Under Rusk and Morton 97 Distribution of seeds and plants . . 98 Promotion of special crops 101 The Division of Pomology 105 Fiber and forage crops.. 107 9. Bonanza Years .. . 109 Problems facing agriculture . 109 Work of plant explorers .. .. 111 Fairchild and Lathrop. 113 Niels Hansen . 114 Mark Carleton 115 Seaman Knapp 118 10. Plant Introduction of the Twentieth Century 120 Search for new crops .. 120 Introductions by Meyer . 122 Significant introductions 1901-13 . .. 125 The war years 136 Looking to the future 139