Seed-germination, 74 Seed-germinator, 74 Seeding, 60, 114 Seed-selection, 56, 62, 64, 66 in the field, 56, 62, 68 of corn, 66 of cotton, 60, 61 of potatoes, 56, 57 of wheat, 64, 65 Seed-selection plat, 63, 64 Selection of seed. _See_ Seed-selection Sepal, 43 Sheep, 276-279 Silo, 295 Smuts, 134, 135 Soil, 1 bacteria in, 24 deepening of, 8 definition of, 1 drainage of, 14 Soil, how formed, 2, 3 how water rises in, 13 improving, 17 manuring of, 21 moisture of, 9 origin of, 1 particles of, magnified, 10 and plant, 25 retention of water by, 12 tillage of, 6 virgin, 17, 18 Sowing seed, 94 Soy beans, 256-260 Spiders, red, 121 Spiracles, 145 Spores, 123, 124, 125, 130, 135 prevention of, 130 Spraying, 137, 138, 139, 155, 156, 157, 209 Spraying outfit, 138, 155, 168, 171 Squanto, 21 Squash, 45, 95 Squash bug, 168 Stamen, 43-48 Starch, 40 Starchy food, 291 Stigma, 44-45 Stock, 79, 82 Strawberry, 45, 55, 59, 90 Style, 43 Subsoil, 1 Subsoiling, 10 Sugar, 40 Sugar plants, 217 Sugar-beet, 218-221 Sugar-cane, 221 Sugar-maple, 217 Sulphate of ammonia, 211 Sun-scald, 84 Sweet pea, 114, 115 Sweet potato, 56, 57, 111, 204-205 Swine, 279-282 Tent caterpillar, 162 Tile drain, 15, 16 benefits of, 14 Tillage, 6-9, 19, 28, 200 Timber, 232-235 enemies of, 233 Tobacco, 189-192 Tobacco worm, 170, 172 Tomato, 40, 105 Tongue grafting, 79, 80 Tools, 313 Topping tobacco, 191 Trap plant, 168 Tree, manuring of, 26 Truck crops, 98-107 Tubercle, 30, 32 Tull, Jethro, 6 Turkeys, 282 Turnip, 95 Twig girdler, 162 Typhoid fever, germ of, 129 Vetches, 255-257 Vitality of seed, 72-75 Vitamines, 298 Wasp, 146 Water, 10 absorption of, by plants, 10 retention of, by soil, 9 rise of, in soil, 13 saved by plants, 10 saved by soils, 12 Watermelons, 106 Wax, 79 Weathering, 4, 7 Weeds, 69, 74 annual, 69 biennial, 70 perennial, 71 Weevil, 169 cotton-boll, 173-177 plum, 156 Wheat, 192-197 selection of seed, 63 yield of, 64 Why feed animals, 290 Wilt cotton, 142 watermelon, 107 Window box, 118 Window-garden, 119-121 Window-gardening, 119 Worn-out land, reclaiming of, 19, 244 Yeast, 127, 128