XXII 
CONTENTS. 
PAGE 
Griffon, E . — Chlorophyll Assimilation of Limodorum abortivum 178 
Tieghem, P. van — Elongation of Nodes 179 
Ludwig, F . — Biology of Hellehorus fcetidus 179 
Figdor, W. — Sap-pressure 179 
Giltay, E . — Transpiration in the Tropics and in Central Europe 179 
Demoussy, E . — Elective Absorption of Mineral Elements by Plants 179 
Atkinson, G. F . — Action of the Rontgen Rays on Vegetation . 298 
Curtel, G . — Physiology of the Flower 299 
Wiesner, J . — Adaptation of Leaves to the Intensity of Light 299 
Berthelot — Effects of the Sun and of Shade on Vegetation 299 
Palladine, W . — Influence of Light on the Formation of Nitrogenous Substances . . 299 
Maze — Assimilation of Carbohydrates 300 
Griffon, E . — Relation between the Depth of Colour of Leaves and Chlorophyll Assimi- 
lation 300 
Wolfer, T . — Assimilation of Nitrates by Plants 300 
Keller, Ida A . — Growth of Viburnum lantanoides 300 
Dixon, H. H . — Transpiration 300 
Lutz, L . — Nutrition of Plants by Nitrogenous Substances 411 
Stone, G. E . — Influence of Electricity on Plants 412 
Daniel, L . — Herbaceous and Woody Grafts 412 
Baranetzky, J . — Causes of the Direction of the Lateral Branches of Trees .. .. 412 
Rtmbach, A . — Downward Growth of Rhizomes 412 
Heckel, E . — Germination and Parasitism of Ximenia 413 
Bernard, N . — Germination of Neottia Nidus-avis 413 
Macdougal, D. T . — Symbiotic Saprophytism 505 
Daniel, L. — Variation in the Graft, and Inheritance of Acquired Characters .. 506 
Rimpach, A . — Physiology of Roots 506 
Richter, L . — Absorption of Nitrogen by Plants 507 
Hildebrand, F . — Germination of Anemone apennina 507 
Boerlage, J, G . — Germination of Heritiera littoralis . . . . 507 
Molisch, H , — Bleeding of Woody Plants 507 
Palladine, W . — Modification of Respiration by Changes in Temperature .. .. 508 
Jackson, R. T . — Localised Stages of Development in Plants and Animals .. .. 620 
Letellier, A . — Influence of Static Electricity on the Direction of Roots 621 
MacDougal, D. T . — Dissemination of the Seeds of Razoumofskia 621 
Wilson, J. H . — Germination of Grinum Macowani 621 
Jacobi, B . — Effect of various Substances on the Respiration and Assimilation of 
Submerged Plants 621 
(3) Irritahiity. 
Czapek, F . — Action of External Irritation on Plants 53 
Ewart, A. J . — Contact Irritability in Hook-climbers 54 
Wiesner, J . — Heliotropism caused by Diffused Daylight 54 
Maige — Influence of Light on the Form and Structure of Branches 55 
Ricome, H . — Influence of Gravity and Light on the Dorsiventral Structure of 
Branches 55 
Kohl, F. G . — Rectipetality 55 
Czapek, F . — Geotropic Irritation-Movements 180 
Thompson, C. H . — Irritable Movements in Marantacese 180 
Nestler, A . — Traumatropic Movements of the Nucleus and of Protoplasm .. .. 181 
Haberlandt, G., & D. T. McDougal — Irritation-Movements in Biophytum .. .. 413 
Moebius, M . — Motile Organs of Leaf-stalks 508 
Simons, Elizabeth A . — Rapidity of Gircumnutation 508 
Harshberger, J. W . — Thermotropic Movement of the Leaves of Rhododendron 
maximum 509 
Bernard, C . — Embryogeny of the Balanophoracese 597 
Wachtel, M . — Geotropism of Roots . . . . . . . 621 
Meischke, P . — Expenditure of Labour in Geotropical Curvatures 622 
(4) - Chemical Chang-es (including- Respiration and Fermentation). 
Maquenne, L . — Changes in Oily Seeds during Germination 55 
Schulze, E . — Decomposition of Proteids with Formation of Aspar agin and Glutamin 
in Seedlings 56 
