INDEX 



449 



digestive juices, 149, 150 ; of 

 sugar, 1,48, 149 : of water, 

 144-8. 

 Secretory canals, 152, 339 (fig.) 

 340, 341, 34-; (fig-), 344 (ftg.) 



— cavities, 63, 151, 152 (fig.) 



— cells, 63, 130, 151. 328, 340 



; — hairs, 105 (fig.), 106, 

 144, 145 (fig.), 149, 150 



(fig.)- 

 Section-cutting, 405, 406. 

 Sedatives, 61. 

 Sedge (Carex), 88. 

 Sedge-family (Cyperaceee), stoma 



of, 100. 

 Sedtiin, leaf of, 116, 166 ; stoma of, 



97 (fig-). 98. 

 Seduni album, 116; 5. spcctahile, 



97 (fig-)- 



Seed-coat, 352 (fig.), 370, 371 (fig.). 



Seed-plants, 322-73 (figs.). 



Seedlings, diseases of, 231, 235 

 (fig.) ; of Conifers, 337, 338 

 (fig.), 352: of Ferns, 294, 304 

 (fig.) ; of Selaginella, 320 (fig.). 



Seeds, 332, 333 ; dispersal of, 46, 

 50. 103. 353, 372 ; food- 

 reserves of, 40, 44, 45, 47, 49, 

 50, 150 ; of Angiosperms, 371-3; 

 of Conifers, 351, 352 (fig.) ; of 

 Cycads, 325 (fig.), 327 ; of 

 graft-hybrids, 389 ; of Lygiiiop- 

 ieris, 331-3 (figs.) ; of parasites, 

 179, 372 ; of Taxus, 346 (fig.). 



Segments (of growing point), 16 

 (fig.), 17 (fig.), 18, 195. 



Segregation of characters in hybrids 

 384-8, 390. 



Selaginella, 314, 321, 332, 373, 407; 

 anatomy of, 317, 318 ; arche- 

 gonia of, 319, 320 (fig.) ; cones 

 of, 318 (fig.) ; embryology of, 

 319, 320 (fig.) ; habit of, 316, 



317 (fig.) ; prothalli of, 319, 

 320 (fig.) ; spermatozoids of, 

 319, 320 (fig.) ; sporangia of, 



318 (fig.), 319.. 



Selaginella kraussiana, 317 ; S. 

 martensii, 317 (fig.) ; S. riipes- 

 tris, 319; S. spiiiosa, 316, 

 317 'fig)' S. umbrosa, 318 



(fig-)-' 



Selection, 378, 380, 390. 



Self-fertihsation, 224, 385 ; — pol- 

 lination, 374; — pruning, 142. 



Semiparasites, I4.t, 147. 



Semipermeable membranes, 8, 9 , 

 artificial — , 402, 403. 



29 



Sensitive Plant [Mimosa pudica), 

 pulvini of, 115, 116 (fig.). 



Sepals, 354, 373. 



Septa (of vessels), 28, 83, 120, 121. 



Septate wood-fibres, 121. 



Sequoia, cone of, 347, 352 (fig.). 



Serrated Wrack [Fucits sevratus), 

 201 (fig.), 202. 



Seta (of sporogonium) of Liver- 

 worts, 282, 283 (fig.) ; of 

 Mosses, 284, 285 (fig.). 



Sewage, conversion of, 26.5. 



Sexual cells. See Egg, Gametes, 

 Spermatozoids. 



Sexual differentiation, 186, 212, 

 220, 227, 228. 



Sexual fusion, 184, 185 (fig.), 213 

 (fig.), 214, 219 (fig.), 237 (fig.). 

 See also Fertilisation. 



Sexual organs and reproduction, of 

 Algje, 184-6 (fig.), 188, 213, 

 214 (fig.), 220-28 (figs.), 269 

 Angiosperms, 365, 366, 368 

 Chlamydomonas, 184-6 (fig.) 

 Conifers, 348-51 (figs.) 

 Cycads, 326, 327 (fig.) ; Cys- 

 topus, 233 (fig.), 234; Equi- 

 setiini, 313 ; Ferns, 301-3 

 (figs.) ; FucHs, 221 (fig.), 224-6 

 (fig.) ; Fungi, 233 (fig.), 234, 

 236, 237 (fig.), 238, 242, 

 244 (fig.), 245 ; Liverworts, 

 277 -9 (fig.) ; Miicor, 237 

 (fig.), 238; Mosses, 279 (fig.) ; 

 CEdogonium, 221-3 (fig-) ; 

 Selaginella, 319, 320 (fig.) ; 

 Ulollinx, 213 (fig.), 214; 

 Vaiicheria, 221 (fig.), 223, 224. 



Sexual reproduction, 288, 289, 306, 

 307, 389, 390. 



Shade-leaves, 112; structure of, 91, 

 95, 96, 100, 168-70 (fig.), 295, 



379. 



She-Oak (Casuarina), stem-struc- 

 ture of, 162 (fig.). 



Sheath, bundle-, of Conifers, 343, 

 344 (fig.) ; of leaves, 107, 108 

 (iig), 112, 113; of stems, 85 

 (fig.), 86. 



Sheath of Blue-green Algje, 206 



(fig.). 

 Shepherd's Purse (Capsella bitrsa- 



pastoris), embryology of, 368- 



70 (fig.) ; hairs of, 102 (fig.) ; 



White Rust of, 231, 233 (fig.). 

 Shingle beach. Lichens of, 258 (fig.). 

 Sieve plates, compound, 130 ; of 



Angiosperms, 28, 29 (fig.), 78 



