Root-hairs, 24, 25, 27, 29, 32

Root-pruning, 86

Roots, 25, 26, 27, 28

Root-tubercles, 30, 37

Rose, 109, 121, 124

Rot of fruit, 122

Rotation of crops, 8, 20, 21, 33-37, 189, 211, 217, 219, 258

Rye, 213-215

San Jose scale, 152, 153

Sap current, the, 40

Scab, 136, 209

Schoolhouses, 334

Scion, 79, 81, 82

Seed, 42

Seed purity, 72-75

Seed vitality, 72-75

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 pla