INDEX. 



699 



529; of electrical stimuli, 524; of 

 external conditions, 522 ; of free 

 oxygen, 296, 522; light, intensity of, 

 298, 522, 525, 527, 574; direction of, 

 (phototaxis), 524; of temperature, 

 297, 522, 528; of water of imbibition, 



524 



Movement; mechanism of, 557; nycti- 

 tropic (Fig. 58), 539, 400; relation 

 of to turgidity, 559; spontaneous, 

 5335 ofplasmodia, 527; of pulsating 

 vacuoles, 522 

 Movements, streaming, of protoplasm, 



296, 521, 558 

 Mucilage in seeds, 17 

 Mucor, heliotropism of, 428 

 Mztcor mucedo, life history of, 634 

 Mucor stolonifer, hydrotropism of, 478 

 Mucorini; conjugation of, 617; life 



history of, 634 

 Mulder 



on formation of compounds of 

 nitrogen, 129 



on geotropism, 454 

 Miiller 



on oxidation of chlorophyll, 266 

 on resin, 233 



on theory of chlorophyll-function, 

 156 

 Muller-Hettlingen, on Galvanotropism, 



474 

 Miiller-Thurgau 



on growth in darkness of nega- 

 tively heliotropic organs, 440 

 on heliotropism, 432, 437 

 on heliotropic curvature, 438 

 on plants, as affected by low tem- 

 perature, 274 



on relation between geotropic and 

 heliotropic irritability, 498 

 Munk, on electricity, 320, 324 

 Milntz 



on evolution of hydrogen by plants, 

 209 



on ferments, 190 

 on mannite in Agarics, 171 

 on nitrification, 129 

 Muscinese, 610, 629 



Naegeli 



on absorption of acids by Fungi, 

 125, 231, 237 



on amount of absorption by cell- 

 walls, 38 



on calcium in food of Moulds, 135 



on evolution, 657, 680 



on fat in Fungi, 219 



on formation of starch-grains, 181, 



183 



on growth of cell- wall, 15 



Naegeli 



on growth by intussusception, 336 



on heat evolved in imbibition, 37 



on imbibition, 32 



on lecithin, 131 



on micellar theory, 33 



on movements of Diatoms, 520 



on nitrogenous food of Fungi, 128 



on organic substances as food of 

 Fungi, 125 



on plasmolysis, 44 



on potassium in food of Fungi, 

 J 34 



on relation of growth to destructive 

 metabolism in yeast, 292 



on starch -grains in chlorophyll-cor- 

 puscles, 141 



on strontium in food of Fungi, 



135 



on stratification, 17 

 on reproduction, 656 

 Narcissus pseudo-narcissus, diageotro- 



pism of flower heads of, 463 

 Nectar, 246 

 Nectary, 101, 246 

 Negative pressure, of gases in vessels, 



118 



Nepenthes, glands of, 247 

 Nephrodium, bulbils of, 599 

 Nephrolepis, adventitious budding of, 



599 



Nervimotility (Dutrochet), 475 



Nicotiana tabacum, geotropic curvatures 

 of, 466 



Niepce de St Victor, on conversion of 

 starch into sugar, 268 



Nitella, heliotropism of, 428 



Nitrates, 127, 150 



Nitrification, 129 



Nitrogen, absorption of, 85, 126 (Fig. 

 20), combined; sources of, 128; com- 

 pounds absorbed by plants, 127; 

 losses of, 129 



Nitrogenous metabolism in plants ; con- 

 structive, 150; destructive, 220 



Nitrogenous organic substance, distri- 

 bution of, 165; formation of, 148 



Nobbe 



on chloride of potassium, 132; 

 chlorine, 136 



on distribution of roots in soil, 52 

 on roots in salt-solutions, 5 1 

 on water-culture, 134 



Non-nitrogenous organic substance, for- 

 mation of, 140; conditions favour- 

 able to, 147; distribution of, 164; 

 plastic, 216; waste, 255 



Nostoc, formation of spores in, 602 



Nothoscordum fragrans, adventitious 

 budding in, 599 



