CONTENTS. xxiii 
PACK 
Deiierain, P. P . — Unequal Resistance of Plants to Drought 85 
Wright, J. S. — Cell-union in Herbaceous Grafting 85 
Letellier, A . — Growth of the Root 85 
Frank, B., & others — Assimilation of Free Nitrogen by Plants 86 
Boehm, J . — Capillarity and Ascent of Sap 87 
Jonsson, B . — Internal Bleeding of Plants 87 
Klebs, G . — Influence of Light on the Propagation of Plants 227 
Vochting, H . — Influence of Light on Flowers 227 
Meehan, T . — Rhythmic Growth 228 
Kny, L . — Physiological Function of Anthocyan 228 
Hegler, R . — Influence of Mechanical Traction on Growth 228 
Raunki-zer, C . — Distribution of Seeds of the Cyperacese 368 
Peter, A . — Germination of Dormant Seeds 368 
Benecke, F . — Rapidity of Growth 369 
Schwendener, S., & G. Krabbe — Relation between Tension and Growth in Length 369 
Sachs, J . — Periods of Growth and Causes of Development 369 
Darwin, F . — Growth of the Fruit of Cucurbita 369 
Ziegenbein, E . — Metastasis and Respiration in Germinating Tubers and Seeds .. 370 
Noll, F . — Transpiration of Succulent Plants 370 
Wiesner, J . — Influence of the Chemical Intensity of Light on the Growth of Plants 475 
Noll, F . — Influence of Phosphorus on the Growth of Plants 476 
Daniel, L . — Morphology and Physiology of Grafting 476 
Romanes, G. J., & others — Germination of Seeds 476 
Potonie, H. — Pseudo -vicipary of Juncus bufonius 477 
Amelung, E . — Etiolation 477 
Vuillemin, P., & E. Legrain — Symbiosis of Heterodera radAcicola with Plants culti- 
vated in the Sahara 477 
Schneider, A . — Symbiosis of Algse and Bacteria with Cycas 478 
Guerin, 0. — Life-history of the Mistletoe 478 
Breal, E., & others — Assimilation of Nitrogen by Plants 478 
Nobbe, F., & L. Hiltner — Fixation of Free Nitrogen by the Leguminosse .. .. 479 
Jonsson, B . — Influence of Light on the Germination of Seeds 590 
Tolomei, G . — Action of Magnetism on Germination 590 
Pfeffer, W. — Work and Pressure in Growing Plants 590 
Sachs, J . — Mechanomorphosis 591 
Sauvageau, C . — Propagation of Potamogeton 591 
Haberlandt, G . — Nutrition of Viviparous Mangrove-plants 591 
Engelmann, Th. W . — Production of Oxygen and Chlorophyll 592 
Kossowitsch, P . — Fixation of Free Nitrogen by Algse 592 
Ganong, W. F . — Absorption of Water by the Green Paris of Plants 592 
Schwendener, S., & E. Strasburger — Ascent of Sap 593 
Stahl, E., & R. Meissner — Transpiration and Assimilation 710 
Bonnier, G . — Nutrition of Green Parasites 711 
Newcombe, F. 0 . — Influence of Mechanical Resistance on the Development of Cells 711 
Schlcesing, T . — Exchange of Carbon Dioxide and Oxygen 711 
Lecomte, H . — Amount of Water absorbed by Roots 711 
(3) Irritability. 
. Hansgirg, A . — Movements of Flowers and Leaves 229 
Klercker, J. af — Movements of the Flowers of Veronica 229 
Scholtz, M . — Movements of the Flower-stalk of Cobsea 229 
Pfeffer, W . — Irritability 370 
Noll, F . — Geotropism and Epinasty 370 
McDougal, D. T . — Intertwining of Tendrils 371 
Halsted, B. D . — Heliotropism of the Mallow 371 
Elfving, F . — Irritability in Plants 479 
Miyoshi, M . — Chemotropic Movements 479 
Romanes, G. J . — Heliotropism 480 
Figdor, W . — Heliotropic Sensitiveness 480 
Peirce, G. J . — Biology of Cuscuta 480 
Macfarlane, J. M. — Irrito-contractility 593 
Juel, O . — Mechanism of the Flowers of Schizanthus 712 
Chauveaud, G . — Movements oj the Stamens of Berberis 712 
