Index. 



285 



Seed-case defined, 23; influence of 

 on absorption of water by seeds, 

 23; in germination, 33; is useless 

 after germination commences, 33; 

 plantlet may need help to burst, 

 34. 



Seeding, prevention of, prolongs the 

 life of plants, 102. 



Seed-leaves denned, 36. 



Seedlings, pricking off young, 75; 

 selection of crossed, 267; variation 

 produced by growing, 262; young, 

 injured by unobstructed rays of 

 sun, 140. 



Seeds absorb water by contact, 22; 

 a few germinate in water, 27; dry- 

 ing of, how affecting their vital- 

 ity, 108; earlier germinating, form 

 more vigorous plantlets, 38; gath- 

 ering and storing of, 104; germina- 

 tion hastened by mutilating seed- 

 case, 30; how deep should they be 

 planted? 38, 183; immature vs. 

 ripe, 105; in which hypocotyl 

 lengthens must be planted shal- 

 low, 36; of pumpkin family 

 should be planted flatwise, 34; rate 

 at which they absorb water, 22; 

 should be tested before planting, 

 31; should riot be planted until 

 soil becomes warm, 29; stored, 

 moisture an enemy to, 107; strati- 

 fication of, 108; very small, should 

 not be covered, 39, 183; vitality of, 

 limited by age, 105; why cover, at 

 planting, 33; why they fail to ger- 

 minate, 30; testing, directions for 

 31; -tester described, 31. 



Selection a means of fixing varia- 

 tions, 261; of crossed seedlings, 

 267; of seed, importance of, 262; 

 of subjects for crossing, 264; prin- 

 ciple of, 17, 25!). 



Self pollination, 100. 



Sepal, 94. 



Sexual reproduction, 16. 



Shading plants after transplanting, 

 240. 



Shears, hedge, 257; lever, 257; pole, 

 257; pruning, 256. 



Shed screen for shading plants, 141. 



Shield budding, 221. 



Shifting plants, 238. 



Side grafting, 219. 



Sifting box for applying insecticide 

 powders, 164. 



Slenderness, pruning for, 247. 



Slips, 205. 



Slugs, 155. 



Smut of the small grains, 173; of 

 corn, 172; of onion, 174. 



Snails, 155. 



Sodium nitrate, 150. 



Soil, and the root, 64; a scene of con- 

 stant changes, 67; compacting, 

 about seeds hastens germination, 

 28; compacting wet, may prevent 

 germination, 27; depth of roots in, 

 75; how penetrated by root-tip, 69; 

 ideal, for land plants, 67; import- 

 ance of organic matter in, 68; 

 needs ventilation, 68; particles of, 

 dissolved by rootrhairs, 71; for 

 potting, 237; puddled, defined, 26; 

 puddled, prevents germination,27. 



Soil -aeration promoted by drain- 

 age, 69; promotes soil fertility, 149. 



Species, 18. 



Specific names defined, 20. 



Spikelet, 97. 



Splice grafting, 214. 



Spli tting down, to prevent branches 

 from, 251. 



Spore germination favored by 

 moisture, 177; prevention of, 173. 



Spores defined, 39; non-sexual, 16; 

 of ferns, how planted, 39. 



Spraying outfit, steam, 166. 



Spray pump, 165. 



Sprinkling of plants under glass to 

 be avoided in bright sunshine, 116. 



Squash, provision in, to aid plant- 

 let to emerge from seed-case, 33; 

 bug, 166; -vine borer, 157. 



Stable manure, 152. 



Staking trees to prevent shaking by 

 the wind, 234. 



Stamens, 95. 



Starvation of roots, 62. 



Stem and root development de- 

 pendent on number of leaves, 82. 



Stem defined, 78. 



