INDEX AND GLOSSARY 



685 



Mosses, 460 (Chap. xxx.). 



Motility, of gametes, loss of, 540. 



Motor influences on movement of 

 water, 107. 



Moulds, Chap, xxiv., 393, 421. 



Movement, 153-167 (Chap, ix.) ; in 

 growing parts, 153 ; stimuli of, 

 153 ; of protoplasm within the cell, 



30. 



Mucilage, in channel of style, 293, 

 305 (Fig. 225). 



Mucor, 399, 401, 414 ; sporangia of, 

 414 (Figs. 313, 314 ; heterothallic 

 culture of, 417 (Fig. 315) ; zygo- 

 spores of, 416 (Fig. 314). 



Mucorales, reduction of sporangium 

 to unicellular conidium, 414. 



Mulberry, aggregate fruit of, with 

 succulent persistent perianth of 

 each flower, 330 (Fig. 256). 



Multiplication, rapid, of Bacteria, 

 449. 



Mummy- wheat, 335. 



Muscari (Grape-Hyacinth), 608. 



Musci, 3, 462, 472 ; saprophytism of, 



465- * 



Mushroom, 440, 442 (Figs. 341, 343) ; 

 germination of, 446. 



Mushroom " spawn," 443. 



Mustard, phototropism in, 158 (Fig. 

 97), 626 (Fig. 477). 



Mutant, a new species, race, or indi- 

 vidual produced by mutation, 569, 

 586. 



" Mutations," heritable deviations 

 from type, which have not been 

 referred directly to known causes, 

 339. 569 ; beneficial, preserved by 

 Mendelian segregation, 569. 



Mutualism, a living together of two 

 organisms with joint physiological 

 action, 227-238. 



Mycelium, an aggregate of fungal 

 hyphae, 393 ; septate, and non- 

 septate, 399. 



Mycorrhiza, the coalition of fungal 

 filaments with the living tissues of 

 other organisms, 227 ; in orchids, 

 231 ; of roots, 230. 



Myosurus, hypogynous flower of, 

 271 (Fig. 195) ; embryo-sac and 

 endosperm of, 315 (Fig. 234). 



Myrrhis, 638. 



Mvrsiphyllum, dextrorse twining 

 stem, 215 (Fig. 144). 



Myxophyceae (Cyanophyceae), 376. 



Narcissus, stoma of, 76 (Figs. 50, 51), 

 102 (Figs. 70, 71) ; leaf-section of, 



it-) (Fig. 79) ; chemotropic pollen- 

 tubes, 304 (Fig. 224) ; flower of, 

 609. 



Narcotics, 31. 



Nastic movements, 161 ; in flowers, 

 162. 



Natural families, 605 (Appendix A). 



Natural selection, 339. 



Natural system of classification, 343. 



Needles of Pine, 529. 



Nelumbium, germination of seeds of, 



335- 

 Nemalion, 389 (Fig. 290). 



Neottia (Bird's Nest Orchis), mycor- 

 rhiza in, 232 (Figs. 159, 160, 161). 



Nepenthes, pitcher of, 240 (Fig. 167) 



Nephrodium, Chap. xxxi. ; see Dry- 

 opteris, pp. 482-510. 



Nephrolepis, stolons and tubers, 598 

 (Fig. 454). 



Nereocystis, 378. 



Nettle (Urtica dioica), 112 ; host for 

 Puccinia caricis, 434. 



Neutral generation, dominant on 

 land, 552. 



New Zealand flax, qualities of fibres 

 of, 178 ; leaf structure, 187 (Fig. 

 120). 



Night-flowering, 152. 



Nightshade (Atropa), 642. 



Nitrifving Bacteria, 123, 450, 452 



(Fig. 348). 



Nitrobacter, 452 (Fig. 348). 



Nitrogen, sources of, 127 ; fixation 

 of, in plants with root-nodules, 237. 



Nitrosomonas, 452 (Fig. 348). 



Nodule-formation, significance of, 

 238. 



Nolina, qualities of fibres, 178. 



Non-septate sac, as mode of con- 

 struction, 170 (Figs. 105, 106). 



Nostoc, 376 ; part of Lichen, 427. 



Nucellus, the body of tissue forming 

 the centre of an ovule, and enclos- 

 ing the embryo-sac ; the mega- 

 sporangium : 294 (Figs. 216, 217). 



Nuclear division, 560-567 (Figs. 428- 

 433) ; nuclear reticulum, 560. 



Nuclear membrane, 560 (Fig. 428). 



Nuclear pairing in Phragmidium, 

 436 (Fig. 338). 



Nuclear sap, 560. 



Nuclear spindle, 562 (Fig. 428). 



Nucleolus, a highly refractive body, 

 probably of reserve substance, in 

 the nucleus, 560 (Fig. 428), 562. 



Nucleo-proteins, 126. 



Nucleus, a definite spherical or oval 

 body, reproduced by division, 

 which acts as centre of the activity 



