600 



INDEX 



Rockweed, 189, 304, 442; sex cells, 

 304. 



Root, aeration, 258 ; aerial, 253, 254, 

 256, 257 ; anatomy, 219, 220, 222 ; 

 anchorage function, 250 ; cap, 217, 

 221 ; crops, 258 ; cross section, 

 215 ; distinctive features, 212 ; 

 distorted, 257 ; in drains, 248 ; 

 duration, 214 ; economics, 257 ; 

 excretions, 243 ; as foliage, 254, 

 255 ; function, 7 ; growing point, 

 217, 221 ; growth zone, 218, 221 ; 

 hair, 218, 224; hair in soil, 240; 

 hair zone, 217, 218, 221; hairs, 

 use, 225; length, 250; longi- 

 tudinal section, 219 ; need for 

 air, 258; of Orchids, 254; origin, 

 223 ; plan of, 225 ; pressure, 

 226 ; protection of, 232 ; prun- 

 ing, 208 ; selective power, 231 ; 

 self -adjustments, 247 ; shortening, 

 257 ; special functions, 250 ; as 

 spines, 256 ; as storage organs, 

 251 ; strains, 216 ; structure, 

 215 ; system, typical, 213 ; tip, 

 213, 217; tip, diameter, 220; 

 tip, of Radish, 216. 



Rootstock, 187, 188. 



Roquefort, 458. 



Rosacece, 548. 



Rosales, described, 547. 



Rose, green, 201, 341 ; of Jericho, 

 359, 360, 570. 



Rosette Perennials, 570, 574. 



Rosette Succulents, 570. 



Rotation of crops, 260. 



Rots, 367. 



Rozites gongylophora, 473. 



Rubber, 108. 



Rubiales, described, 556. 



Rubus squarrosus, 193. 



Ruscus, 194, 536. 



Russian Thistle, 359. 



Rust, 367, 465, 466 ; of Wheat, 90. 



Sac Fungi, 447. 



Saccharomyces, 459 ; described, 458. 

 Saccharose, 100. 

 Sage Brush Shrubs, 570. 

 Sago Palm, 517. 

 Salicales, described, 541. 

 Salicornia herbacea, 546. 

 Saline Formations, 586 ; Habitats, 

 573. 



Salt Marsh Formations, 586. 



Salvia pratensis, 291. 



Salvinia natans, 499, 500. 



Samphire, 544, 546, 573. 



Sand-box, 365. 



Sand Formations, 586. 



Sandalwood, 543. 



Santalales, described, 543. 



Sap, rise in trees, 147 ; theory of 

 ascent, 149; wood, 124, 145. 



Sapindales, described, 549. 



Sapling, 387. 



Saprolegnia, 435, 578. 



Saprolegniales, described, 435. 



Saprophyte, 11, 83. 



Sargassum, 563 ; vulgare, 443. 



Sarracenia, 75, 76, 246, 579. 



Sarraceniales, described, 547. 



Savannahs, 585. 



Saw Grass, 571. 



Saxifragacea, 548. 



Scabs, 367. 



Scale Mosses, 482. 



Scape, 193. 



Schistostega osmundacea, 490. 



Schizomycetes, description, 402. 



Schizophyceoe, 399. 



Science, aim, 12 ; applications, 5. 



Scion, 208. 



Scitaminales, described, 537. 



Sclereids, 265. 



Sclerenchyma, 130, 265. 



Sclerotium, 414, 448, 453. 



Scouring Rushes, 500. 



Screw Pines, 529. 



Scrophulariaceoe, 555. 



Sea, Lettuce, 422 ; Mosses, 443, 447 ; 

 Palm, 441. 



Seasonal cycle, 388. 



Seaweeds, 12. 



Secretion, 266. 



Secretions, 107. 



Sedentary Waterweeds, 564. 



Sedges, 530. 



Seed, 390; albuminous, 374, 375; 

 characteristics, 372; coat, 351, 

 375; condition of life, 378; du- 

 ration of life, 377, 380 ; economics, 

 385; ex-albuminous, 374, 376; 

 function, 8; plants, 10, 512; pro- 

 jection, 364; structure, 373. 



Seedling, 9, 387 ; of Radish, 218. 



Selaginella, 325, 505; lepidophylla, 

 505,570; life cycle, 506. 



