INDEX 



601 



Selaginellales, described, 505. 



Selection of variations, 318. 



Self-adjustments, 55, 266. 



Semi-permeable membrane, 228, 235. 



Sempervivum, 188. 



Sepals, 269. 



Sequoia, 113, 523. 



Seta, 484, 488. 



Sex, cells, fusion, 278, 279; estab- 

 lished, 304 ; origin, 302 ; origin, 

 summary, 308 ; in plants, 307 ; 

 stages in development, 303. 



Sexual organs, 307. 



Shade, growth under, 95. 



Shelf Fungi, 474. 



Shoot, 190. 



Shrub Formations, 585. 



Shrubs, 9. 



Side roots, origin, 223. 



Sieve, plate, 152; tube, 31, 131, 152, 

 262. 



Sigillaria, 509. 



Silene, 547. 



Silicles, 348. 



Siphonales, 563 ; described, 429. 



Skeleton of plants, 98. 



Skunk Cabbage, 268. 



Sleep movements, 57, 61. 



Slime-fungi, 412. 



Slime-mold, 39, 357, 412. 



Slips, 259. 



Smuts, 367, 464. 



Snapdragon, 274. 



Societies, 582. 



Soil, composition, 237; cultivation, 

 260 ; solution, 241 ; structure, 238, 

 239. 



Solanacece, 555. 



Solomon's Seal, 191. 



Soredia, 462. 



Sorus, 326, 495. 



Bpadix, 338. 



Spanish Moss, 463, 535. 



Spat he, 338. 



Sitfitfii/lorce, 533. 



Spawn, 471. 



Special creation, 315. 



Specialization, 489, 498. 



Species, 7, 392 ; name, 392. 



Spectroscope, 53. 



Sperm, 277 ; cell, 9, 307 ; of Fucus, 

 304 ; of Nemalion, 305. 



Spcrmairnnia, 406. 



Spcrmatium, 445, 466. 



Spermalophyta, described, 512. 



Spermatophyte, 10 ; homologies, 512 ; 

 reproduction, 512 ; structure, 512. 



Spermatozoid, 280, 304. 



Sphagnales, described, 485. 



Sphagnum, 115, 572; cymbifolium, 

 485; leaf, 156. 



Spike, 335, 337. 



Spines, 192, 193, 256 ; Barberry, 81 ; 

 Echinocactus, 80 ; morphology, 

 79 ; significance, 79. 



Spirillum, 406. 



Spirochete, 406 ; dentium, 405. 



Spirogyra, 425. 



Splachnum vasculosum, 489. 



Spongy tissue, 30. 



Spontaneous generation, 39, 40. 



Sporangium, 324, 325, 397, 414, 493, 

 495. 



Spore, 324, 373 ; asexual, 301 ; cases 

 of Mold, 302 ; dissemination, 360 ; 

 in dust, 404. 



Sporidium, 466. 



Sporogonium, 479, 483. 



Sporophore, 84, 87, 448. 



Sporophyll, 325. 



Sporophyte, 484, 497. 



Sports, 205, 319; preservation, 318, 

 319 ; seed, 319. 



Spot diseases, 367. 



Spraying, 371. 



Squirting, Cucumber, 365 ; Fungus, 

 439. 



Stamen, 272 ; irritable, 297. 



Staminate flowers, 276, 285. 



Starch, as food for man, 103 ; for- 

 mation under light screen, 21 ; 

 formation vs. osmosis, 234 ; for- 

 mation in presence of CO2, 22 ; 

 pains, 101 ; grains, typical forms, 

 102; kinds, 101; sheath, 130. 



Stele, 264. 



Stem, anatomy, 128, 129, 131; 

 characteristics, 113; columnar, 

 179 ; as conducting mechanism, 

 150; creeping, 187; deliquescent, 

 181 ; economics, 205 ; endogenous, 

 127; excurrent, 179, 180; exog- 

 enous, 127, 131 ; function, 7, ">:* ; 

 generalized diagram, 125 ; her- 

 baceous, 115; special function, 

 191 ; storage, 191 ; structure, 

 115; Succulents, 570; symmetry, 

 181, 182; tissues, 116; tissues, 



