43S 



INDEX 



Mucilaj^'e, 38, 58, 149, 130, 167, 281, 

 30J ; of Algje, 188, 20j, 213. 

 217, 222, 225. 



Mucilage-cavities, 152 ; — cells, 273 

 (fig) ; — glands, 150 (fig.). 



Mucilaginous walls, 38, 95, 184, 189 

 (fig.), 202, 214, 262. 



Mucoy, 231, 252, 257, 406 ; structure 

 and life-history of, 236-8 (fig.). 



ilfjifoi'-yeast, 257. 



Mulberry (Morns), 370. 



Mullein (Vcybascum), 103, 378. 



Multicellular, i. 



Multiciliate zoospores, 218 (lig.). 



Multinucleate structures, i-^^, ig8, 

 208, 218 (fig.), 224, 234, 326,- 

 361, 368. 



Musci, 269, 274-7 (figs.), 304. 

 407 ; antheridia of, 279 (fig.) ; 

 archegonia of, 280 ; branching 

 of, 274, 275; embryo of. 284, 

 285 (fig.) ; fertilisation in, 

 281 ; growing point of, 18, 

 276; habitat of, 269, 277; 

 leaves of, 112, 274, 275 (fig.) ; 

 protonema of. 287 (fig.), 288 ; 

 rhizoids of, 274 ; sporogonia 

 of, 284-7 (fi.§-) ; stem of, 

 275 (fig.), 276 ; stomata of, 

 100, 284, 285 (fig.) ; vegetative 

 reproduction of, 277, 287 (fig.), 

 288. 



Mushroom [Agariciis], 245, 255, 

 407 ; structure and reproduc- 

 tion of, 248, 249 (fig.). 



Musk {Mimulus moschaius), pollen 

 of, 362 (fig.). 



Mustard (Sinapis), 69. 



Mustard oil, 48, 63. 



Mutants, 381 (fig.), 382, 384. 



Mutation, 380-82 (fig.) ; vegeta- 

 tive, 382, 383 (fig.), 390. 



Mycelium, 230, 236, 237 (fig.), 239, 

 243, 248. 



Mycorrhiza, 72, 252, 31b; of Bird's- 

 Nest Orchid (Ncultia), -ji, 73 



(fig.). 

 Myrica gale, 268 ; ovule of, 357, 



359. 



Mvriophyllum , 171. 



Myronate of potash, 48. 



Myrosin, 48, ,=i3. 



Myrtacea', (12. 



Myrtle {Mvi'liia cniiniiiniis). secre- 

 tory cavities ot, 131. 



Myxomycetes, 250, 231, 40I). 



jMyxophyeea;, 406. Sec Cyano- 

 phycejp 



Naked cells, 184, 186, 213, 250, 



366 ; — flowers, 354. 

 Narcotics, 61 

 Nasturtium, Garden (Tropceoliiin), 



63. 1 1-5. 

 Natural hybrids, 385 (fig.), 388, 



389. 



Natural selection, 378, 390. 



Navi cilia, 207 (fig.). 



Neck of, archegonium of, Conifers, 

 348. 349 (fig.) ; Cyeads, 326, 

 327 (fig.) ; Ferns, 302, 303 

 (fig.) ; Liverworts, 280, 281 

 (fig.); Mosses, 280; Sclcigiiiclla, 

 319, 320 (fig.). 



Neck-eanal cells, 280, 302. 



Nectaries, 144, 363 ; mechanism 

 of, 149 ; structure of, 148, 



149 (fig.). 

 Nech-ia, 239, 242, 233 

 Needle-shaped crystals, 58, 59 (fig.), 



^37. 

 Negative pressure, 35, 69. 

 Neottia nidits-avis, 179; mycorrhiza 



°f. 72, 73 (fig.) : pollen of, 361, 



362 (fig.). 

 Xepeta glechoma, 1O8 ; epidermis 



of, 94 (fig.). 



Nepenthes, glands of, 149. 



Nephrodium fiUx-mas, sorus of, 296 

 (fig.), 298 (fig.) ; sporangium 

 of, 299 (fig.) ; spore-formation 

 fi"'. 3°7 (fig.) ; stem of, 290, 

 ,.294 (fig). 



Neriuni oleander, leaf-structure of, 

 no, 161 (fig.), 162. 



Nettle (Urtiea), hairs of, 104. 103 

 (fig.) ; leaf-structure of. 38 

 (fig.). 39 ; root of. 132. 



New species, origin of, 378, 3S0, 

 381, 382, 393. 



New Zealand Flax (Plinniiniiii 

 lenax), 34. 



Nicotiana tabaciim, 01. 



Nicotine, 61. 



Nightshade, Deadly {Atropa bella- 

 donna), 61 ; Fnchanter's — 

 {Circa-a hitetiatui), 38, 39 (fig) 

 146, 168. 



Nitrate-Bacteria (Nitrobaclcr), 266. 



Nitric acid, and proteins, 50. 



Nitrite-Bacteria (Nitroso)no)!as), 266. 



N itntluictcr, 200. 



Nitrogen-fixation, 266, 267 



Nitrogen-fixing Iiacteria, 266 267 

 (ti,?.). 



Nitrogeuous lood-reser\cs, 30-32. 



Nih'osomonas, 266. 



