604 
INDEX 
All numbers refer to pages, heavy type indicating illustrations. 
Saprophyte, 493 
Sap-wood, 246 
Sassafras, 165, 168, 360, 406, 407; 
oil of, 297; pith, 163; wood, 260 
Sassafras officinale, Sassafras 
Satureia hortensis, Summer Savory 
Savory, 418, 419; herbs, 128, 137; 
seeds, 128, 137; summer, 137, 
383 
Savoy: cabbage, 69 
Saxifragacee, Saxifrage Family 
iS Theol Family, 399: currant, 
4 
Scale-like outgrowths, 538 
Scale-tree, 299, 301 
Scale-tree Family: scale-tree, 299, 
301 
Scallop Squash, 80 
Schizocarp, 370 
Schizomycetes, Fission Fungi 
Scitaminales, Banana Order 
Sclerenchyma, 538, 540 
Sclerotic tissues, 538 
Scotch Pine, 269; rose, 151 
Scouring-rush, 541, 542, 
giant, 299 
Scouring-rush Family: scouring- 
rush, 541, 543 
Screens, 223 
Scrophulariacee, Figwort Family 
Scutellum, 388 
Sea Island Cotton, 225, 226, 227 
Sealing-wax, 288 
Seaside Buttercup, evolution of, 
462 
Seaside Crowfoot, 463 
Sea-tangle Family: 
486, 488 
Sea-tangles, 485, 486, 488 
Seaweed Division, 491 
Seaweed Subdivision, 395, 396 
Seaweeds, 308 
Secale cereale, Rye 
Secondary, inflorescence, 
leaves, 318, 319; tissue, 542 
Sedge Family, 397 
Seed, 350, 351, 550; albuminous, 
355; exalbuminous, 363, 557; of 
flax, 317, 318 
Seed-bud, 48, 317, 318 
Seed-coat, 316, 317, 318 
Seed-food, 29, 316, 317, 318 
543; 
sea-tangles, 
352; 
Seed-leaves, 46, 48, 317, 318 
Seedling, development, 317; of 
flax, 318, 319 
Seed-oils, 101 
Seed-plant Division, 393, 396, 397 
Seed-plants, 393, 396, 397 
Seed-root, 48, 317, 318 
Seeds, 352; make best provision 
for offspring, 550; parts of, 
29, 49, 316, 352; the greatest 
achievement of the vegetable 
kingdom, 560 , 
Seed-stem, 317, 318 
Seed-wing, 551 
Seedwort Division, 394, 396 
Seedworts, 393, 394, 396, 397 
Selaginella, 550 | 
Selaginellacee, Selaginella Family 
Selaginella Family: selaginellas, 
545-547 
Selaginella spp., Selaginellas 
Selaginellas, 545-547 
Selected adaptations, 446, 452 
Selection, artificial, 127, 446, 447; 
natural, 447, 448; subordinate 
role of, 460 
Self-control inherent in every or- 
ganism, 464 
Self-movement, 461 
Sepal, 29, 319, 352 
Septicidal dehiscence of capsule, 
379 
Septic organisms, 177 
Sequoia sempervirens, Redwood 
Service versus competition, 468 
Sessile, 342 
Sewing-thread, 223 
Sexual, generation, 560; reproduc- 
tion, 480 
Sexuality lost in certain fungi, 501 
Shade trees, 303 
Shagbark Hickory, 41 
Sheath, 337 
Sheath-algze, 482, 483, 484, 514, 
558; compared with spore-sac 
fungi, 501 
Sheath-alga Family: cushion 
sheath-alga, 484; free-branching 
sheath-alga, 483 
Sheep Laurel, 202, 379 
Shelf fungus, 239 
Shell substitute, 284 
