INDEX 



323 



Smythe, account of irrigation in 



Utah, 143 

 Snout beetles, 235 

 Snowball, propagation of, 56 

 Soaking seed, exercise in, 52 

 Sodium nitrate, 130 

 Soils adapted to apple, 181 



to pear, 183 



to pecan, 194 



to strawberry, 206 



for fruit-trees, 119 



for vegetables, 86 

 Solanacese, 5 

 Solanum, a group of plants, 4 



carolinense, 4 



nigrum, 4 



Solids, soluble, in oranges, 198 

 Solution for drying prunes, 188 

 Sorrel as a soil indicator, 120 

 Sources of plant-foods, 34 

 South America explored for wild 



plants, 7 



Soybean, 110-111 

 Species defined, 5 

 Sphagnum moss as packing for 



strawberry plants, 207 

 Spiders, 223 

 Spinach, 106 

 Spiraea Vanhouttei, 303 

 Spore sacs of fungi, 248 

 Spores of fungi, 247 



how distributed, 247 

 Sports in plant life, 10 

 Spray, contact, 227 



-gun, 139 



machinery, study of, 141 



mixtures, exercise, 259 



-rods and spraying, 138 

 Spraying for codlin-moth, 229 



of citrus trees, 199 

 Spruce, 306 

 Spur-budding, 75 



of grape, 217 



-pruning, 218 

 Square system of orchard planting, 



124 

 Squashes, 115 



Stamens, functions of, 159 

 Staminate flowers, 160 

 Starch, test for, 38 



changed to other materials, 262 



-content of corn, 12 

 Stem-cutting, 60 

 Stems, growing portions of, 35 



growth of, 27 

 Stick-tights, dissemination of seed 



of, 44 



Stigma, condition of when receptive, 

 174 



function of, 159 



illustrated, 158 

 Stipules, 30 

 Stomata, exercise, 37 



in the leaf, 31 

 Storage, advantages of, 272 



cold, 270 



common, 270 



reservoirs, 147 

 Stored goods, injury by insects, 



223 

 Straight lines, when permissible in 



landscape work, 301 

 Stratification, exercise, 52 



of seeds, 45 

 Strawberry, cultivation of, 208 



everbearing, 209 



geographical distribution of, 206 



harvesting and packing of, 209 



history of, 206 



mulching of, 208 



planting systems for the, 207, 

 208 



soils adapted to, 206 



transplanting of, 207 

 Streams, diversion of, 144, 147 

 Structure of insects, 224 



of plant-cells, 17 

 Style, illustrated, 158 

 Success in orcharding, 140 

 Sucker, defined, 59 



of grape, 217 

 Sugar changed by leucoplasts, 20 



percentage in grape and orange 

 juice, 263 



