466 



VEGETABLE PHYSIOLOGY 



Medullary rays, influence of, on 

 transpiration current, 87 ; as store- 

 houses of reserve material, 231 



Megaspores, 438 



Melampyrum, 209 



Melibiase, 256 



Melizitase, 256 



Mesocarpece, 431 



Mesocarpus, 365, 371 



Metabolism, 6, 129, 264 



Metapectic acid, 47 



Metapectine, 47 



Meta- proteins, 168 



Methane, 174 



Micellae of cell- wall. 48 



Microbes, 307 



Micrococcus Urece, 261 



Microsomata, 269 



Microspores, 438 



Middle lamella, 51 



Mimosa, 67, 363, 365, 377, 379, 393, 

 397 



Mimulus, 392 



Mistletoe, 205, 350 



Mitosis, 422 



MIYOSHI on chemotaxis, 402 



MonoblepTiaris, 433 



Monoecious plants, 452 



Monotropa, 204 



Moorland plants, 345 



Movements, of protoplasm, 6, 357 ; 

 for capture, 197, 199 ; in multi- 

 cellular organs, 358 



Mucilage, 56, 240 



Mucor, 459 



MULLIKIN BROWN and FRENCH on 

 formaldehyde, 157 



Mycoderma aceti, 262 



Mycorhiza, 204 



Myriophyllum, 123 



Myronate of potash, see Sinigrin 



Myrosin, 254, 259 



Myxomycetes, 10, 354, 400, 401, 402 



NAEGELI, theory of composition of 

 cell-wall, 48 



Nectar, 278 



Nectary, 68, 450 



Negative pressure, in wood-vessels, 

 94, 97 ; influence of, on move- 

 ments of gases, 122 



Neottia, 191 



Nepenthes, 196, 253 



Nervous mechanisms, 406 



Nickel, 181 . 



Nicotiana, 380 



Nitella, 6, 358 



Nitrates, 135, 171 



Nitrification, 139, 163 



Nitrogen, absorption of, 120, 139 ; 



in proteins, 166 ; fixation of, by 



leguminous plants, 140, 170, 203, 



by Algae, 171 

 Nostoc, 12, 201 

 Nuclear spindle, 269, 422 

 Nuclein, 8, 180, 182 

 Nucleolus, 8 

 Nucleoplasm, 8 

 Nucleus, 5 ; position in cell, 7 ; 



structure of, 8 ; definitive, 442 ; 



generative, 446 

 Nutation, 321 

 Nyctitropic movements, 331, 380, 



382 

 Nymphcea, 115, 339 



Ocelli, 410 



(Edogonium, 436 



Oil, see Fat, 



Oncidium, 245 



Oogonia, 432 



Oospheres, 432 



Oospore, 434 



Optically active compounds, 158 



Opuntia, 298, 302 



Ornithogalum, 245 



Orobanchacece, 350 



Orobanche, 208 



Osmosis, 60 ; in adult cells, 65 ; from 

 veins of leaf, 79, 105 ; influence 

 of, on transpiration current, 106, 

 108 



Osmotic pressure, 61 



Ouvirandra, 339 



Ovule, 440 



Oxalic acid, 302 



Oxalidacece, 379 



Oxalis acetosella, 370 



Oxidases, 261, 265, 305 



Oxidation, 305 



Oxygen, mode of absorption by 

 plants, 15, 35, 120 ; influence of, 

 on action of roots, 90 ; proof of 

 absorption of, 292 ; relation of 

 absorption of, to exhalation of 

 carbon dioxide, 297 ; variation in 

 amount of, as affecting respiration, 

 306 



Paeonia, 45. 

 Pangium, 173 

 Papai'n, 258 



