INDEX. 



289 



M 



Magnesium, 100, 101 

 Maple sap, 132, 133, 136 

 Mechanical effect of water, 189-191 ; 



of other substances, 236 

 Mechanical force, see Force 

 Mechanical pull, effect on growth, 



187, 188 

 Mechanical restraint, effect on 



growth, 174, 187 

 Milk-tubes, 159, 160 

 Mimosa, 247-351 

 MiMHLUs, reproduction, 370-373 

 Mistletoe, 86-88 

 Motor zone, iu roots, 301 ; 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-tix- 

 ing bacteria, 75, 76; cycle of N 

 in nature, 77 



Nitrogen bacteria, 30, 68, 75, 76 



Nitrogenous foods, occurrence, 70; 

 origin, 70; manufacture, 70, 71 ; 

 storage, 71, 73; use, 71, 73. See 

 Amides, Proteids 



Non -sexual reproduction, advantages 

 277-379 



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, 43 ; essential elements, 



43; characteristic element, 4?. 

 8ee Photosynthesis, Nitrates, Ni- 

 trogenous foods, etc. 



O 



Osmosis, 106, 108-110 



Osmotic pressure, 110; effect of 

 changes in, 239, 230 



Oxidation, conditions, 13, 14; in res- 

 piration, 18-30; of NHs com- 

 pounds, 20 ; of HjS and S, 20 ; of 

 Fe compounds, 30, 21. See Res- 

 piration 



Oxygen, optimum percentage, 14; 

 effect of excess, 15; in respira- 

 tion, 18-20 



Parasites, 85-92; Arcenthohiwm,, 90 

 bacteria in root-tubercles, 76 

 Brugmarmia, 90; Cuscuta, 88-90 

 lichens, 91, 92; Phoradendron, 

 86-88; Rafflesia, 90; Razoumow 

 skia, 90; Viseum, 86-88 



Parasitism, 85; advantageous, 86 



Parthenogenesis, 359, 260 



Petioles, irritable by contact, 344 



Phosphorus, 96, 97 



Photosynthesis, 58-66 



Phototaxis, see Light 



Phototropism, see Light 



Physiology, aim, 3 



Plageotropic organs, 198 



Plants, differences from animals, 1 

 resemblances, 261 



Poisons, stimulating and other effects. 

 230 ; action of dissociated atoms 

 228, 329 



Potassium, 98, 99 



Protoplasm, a structure, 7 



Pulvinus, 347 



R 



Rafflesia, 90 



Razoumowskia, 90 



Removal of manufactured foods, 63 



