INDEX. 



289 



Magnesium, 100, 101 

 Maple sap, 132, 133, 136 

 Mechanical effect of water, 189-191 ; 



of other substances, 226 

 Mechanical force, see Force 

 Mechanical pull, effect on growth, 



187, 188 

 Mechanical restraint, effect on 



growth, 174, 187 

 Milk-tubes, 159, 160 

 MIMOSA, 247-251 

 MIMULUS, reproduction, 270-273 

 Mistletoe, 86-88 

 Motor zone, in roots, 201 ; in tendrils, 



242 

 Movement, of gases, 103, 104, 142; of 



water, Chapter IV., 103-161 

 Movements, see Growth, Irritability, 



Mimosa, etc. 

 Mycorhiza, 79, 80 



N 



Nectaries, 126 



NEPENTHES, 84, 85 



Nitrates, 69 



Nitrifying bacteria, 20, 68 



Nitrogen, distribution in plant, 66; 

 occurrence in nature, 67 ; sources, 

 67 ; nitrifying bacteria, 68 ; N-fix- 

 ing bacteria, 75, 76; cycle of N 

 in nature, 77 



Nitrogen bacteria, 20, 68, 75, 76 



Nitrogenous foods, occurrence, 70; 

 origin, 70; manufacture, 70, 71; 

 storage, 71, 72; use, 71, 72. See 

 Amides, Proteids 



Non -sexual reproduction, advantages 

 277-279 



Nucleus, relation to growth, 181 



Nutrient solutions, means of transfer, 

 116-125 



Nutrition, Chapter III., 40-102; rela- 

 tion to respiration, 40, 41 ; stages, 

 41; furnishes material, 42; food 

 materials, 42 ; essential elements, 



TO 



42; characteristic element, 43. 

 See Photosynthesis, Nitrates, Ni- 

 trogenous foods, etc. 



Osmosis, 106, 108-110 



Osmotic pressure, 110; effect of 

 changes in, 229, 230 



Oxidation, conditions, 13, 14; in res- 

 piration, 18-20; of NH, com- 

 pounds, 20; of H 2 S and S, 20; of 

 Fe compounds, 20, 21. See Res- 

 piration 



Oxygen, optimum percentage, 14; 

 effect of excess, 15; in respira- 

 tion, 18-20 



Parasites, 85-92; Arceuthobium, 90; 



bacteria in root-tubercles, 76; 



Brugmansia, 90; Cuscuta, 88-90; 



lichens, 91, 92; PJwradendron, 



86-88; Rqfflesia, 90; Basoumow- 



stoa, 90; Viscum, 86-88 

 Parasitism, 85; advantageous, 86 

 Parthenogenesis, 259, 260 

 Petioles, irritable by contact, 244 

 Phosphorus, 96, 97 

 Photosynthesis, 58-66 

 Phototaxis, see Light 

 Phototropism, see Light 

 Physiology, aim, 2 

 Plageo tropic organs, 198 

 Plants, differences from animals, 1; 



resemblances, 261 

 Poisons, stimulating and other effects, 



230 ; action of dissociated atoms, 



228, 229 



Potassium, 98, 99 

 Protoplasm, a structure, 7 

 Pulvinus, 247 



R 



RAFFLESIA, 90 



RAZOUMOWSKIA, 90 



Removal of manufactured foods, 63 



