6 9 8 



INDEX. 



Meyen 



on transpiration-current, 117 



on luminosity, 317 

 Meyer 



on formation of starch-grains, 181 



on relation of iron to formation of 

 chlorophyll-corpuscles, 240 

 Micella, 32 



Micellar theory of Naegeli, 32, 336 

 Microsomata, 23, 26 

 Microsporangia, 603 

 Microspores, 603 

 Middle Lamella, 19, 20 

 Miescher, on nuclein, 27 

 Mikosch 



on etiolin, 240 



on photochemical induction, 263 

 Millardet 



on movements of Mimosa, 541, 



543> 544 



on tissue-tensions in Mimosa, 406 

 Mimosa albida, paraheliotropism of, 



55 2 



Mimosa pudica, 23, 302, 312, 324, 533, 

 538; action of anaesthetics on, 549, 

 572; conditions of irritability of, 549, 

 572 ; conduction of stimuli in, 548, 

 583; daily periodic movements of, 543; 

 fatigue in, 550; mechanism of move- 

 ments, 568; nyctitropic movements, 

 (Figs. 55, 56), 54 1, 57; ravs favour- 

 able to irritability of, 549; relation 

 between tissue tensions, and nyctitro- 

 pic movements, 543 ; sensitiveness to 

 gravity, 552; to light, 538; to me- 

 chanical stimuli, 544, 561 ; spon- 

 taneous movements of, 537; structure 

 of pulvinus of (Figs. 55, 56), 533 

 Mimulus, irritability of stigma of, 545 

 Minimum temperature of growth, 293 

 Minot, on extrusion of polar body, 



672 



Mistletoe, 429, 458, 474; absence of 

 geotropic irritability in, 458 ; negative 

 heliotropism of hypocotyl, 429; para- 

 sitism of, 124; somatotropism of, 474 

 von Mohl 



on erythrophyll, 266 



on negative refraction of cell-wall, 



15 



on optical properties of starch- 

 grains, 183 



on interference colours in starch- 

 grains, 36 



on the relation between geotropic 

 and heliotropic irritability, 498 



on resumption of the formation of 

 chlorophyll in spring, 266 



on starch-grains in chlorophyll cor- 

 puscles, 141 



von Mohl 



on transpiration as affected by sto- 

 mata, 107, 108 



on twining stems, 491, 508 

 on twining of tendrils, 490 

 Moissan 



on evolution of carbon dioxide 

 from leaves, 199, 276 



on gaseous interchange during ger- 

 mination, 206 

 Moisture, directive influence on growth, 



478 



Moldenhawer, on transpiration as af- 

 fected by stomata, 107 

 Molisch, on hydrotropism, 477 

 Moil- 

 on absorption of carbon dioxide by 

 leaves, 83 (Figs. 17, 18) 



on root-pressure, 92 

 Monoblepharis, reproduction of, 620 

 Monotropa Hypopitys, ovule of (Fig. 70), 



616; parasitism of, 125 

 Monstera Lennea, growth of aerial root 



in darkness, 437 



Morgen, on disappearance of starch- 

 grains from leaves, 163 

 Morren 



on Megaclinum falcatrim, 536 

 on movements of stamens of Cis- 

 tineae and Sparmannia, 545 



on movements of style of Gold- 

 fussia anisophylla, 545 



on structure of stamens of Berberis 

 and Mahonia, 533 

 Mortierella, fruit of, 625 

 Mosses, archegonium of (Fig. 68), 610; 

 life history of, 628 ; vegetative repro- 

 duction of, 598, 599 

 Motility of protoplasm, 568 

 Movements, of chlorophyll-band, 525, 

 527 ; of chlorophyll-corpuscles, 299, 

 527 ; of motile organs, 372 ; of mature 

 motile organs, 375, 519, 532; of 

 growth (auxotonic), 375, 533, 573; 

 of variation (allassotonic), 533, 558 

 Movements, 



biological significance of, 587 ; con- 

 ditions of, 296, 372, 537; electrical 

 phenomena of, 324; evolution of heat 

 in, 312; induced, 538 

 Movements, 



influence on, of anaesthetics, 549, 

 572; of chemical stimuli, 529, 547; 

 of darkness, 544; of fatigue, 302, 

 550; of light, 298, 400; of free 

 oxygen, 296; of temperature, 297, 



376, 544 



Movements, 



of organisms (locomotion), 519; 

 influence on, of chemical stimuli, 524, 



