CONTENTS, 
XXI 
PAGE 
Haacke, W. — Variation .. 538 
Steinbrinck, C . — Mechanics of the Dehiscence of Anthers and Sporanges 538 
Tubeuf, C. y . — Cones of Coniferse 538 
Hochreutiner, (A.— Structure of Aquatic Plants 538 
Wehmer, C. — Oak-leaved Hornbeam 538 
Hochreutiner, G . — PhylPdes of Acacia 539 
Zander, R . — Laticiferous Hairs of the Cichoriaceae 539 
MacDougal, D. T. — Root-Tubers of Isopyrum 539 
Rimpach, A . — Depth of the Underground Portion of Perennial Plants 539 
Caruel, T . — Euthymorphosis 643 
Lazniewski, W. v . — Structure of Alpine Plants 643 
Lindemuth, H . — Production of Seed on Cut Inflorescences 644 
Golenkin, M . — Inflorescence of Urticacese and Moraceae 644 
Leger, L. J. — Vegetative Organs of Pa paveracese and Fumariaceae 644 
Haberlandt, G.—Hydathodes 644 
Kohl, F. G . — Opening and Closing of Stomates 645 
Jahn, E . — Floating Leaves 645 
Grob, A . — Epiderm of the Leaf of Grasses 645 
Warming, E . — Leaves of Euphorbia buxifolia 645 
Lindemuth, H . — Production of Bulbils by Lachenalia and Hyacinthus 645 
Tubeuf, 0. von — Trichomes of Conifer ae 646 
Hildebrand, F— Hairs on Tubers of Cyclamen 646 
B. Physiology. 
(1) Reproduction and Embryology. 
Nawaschin, S.—Chalazogamy in the Walnut 85 
Hegelmaier, F . — Development of the Embryo in Angiosperms 86 
Andrews, F.M. — Embryo-sac of Jeffersonia 86 
Tieghem, P. van — Acrogamous and, Basigamous Fertilisation 206 
Klebs, G . — Physiology of Reproduction 206 
Ewart, A. J . — Structure and Growth of the Pollen-Tube 206 
Schilbersky, K., & C. E. Jeffrev — Polyembryony 207 
Knuth, P., & others — Cross- Pollination and Self-Pollination 207 
Eisen, G . — Caprijication of the Fig 208 
Mobii s, M . — Sexual Reproduction in Plants 328 
Hirase, Sakugrio — Fertilisation and Euibryogeny of Ginkgo biloba ( Salisburia ) .. 328 
Ule, E., & others — Cross- Fertilisation and Self- Fertilisation 328 
Schwere, S . — Embryology of Taraxacum 435 
Schaffner, J. H. — Embryo- Sac of Alisma 436 
Westermaieb, M . — Ovules of Angiosperms 436 
Familler, J . — Abortive or Transformed Sexual Organs 437 
Daveau, J . — Proterandry in a Palm 437 
Lidforss, B . — Biology of Pollen 437 
Molliard, M . — Formation of Pollen within Ovules 437 
Robertson, O., & others — Cross -Pollination and Self-Pollination 540 
Tieghem, P. van — Basigamy and Homoeogamy 646 
Shaw, W. R — Embryogeny of Sequoia 617 
Keeble. F. W — Fertilisation of Loranthaceae 647 
Molliard, M . — Homology of the Pullen and Ovule 647 
(2) Nutrition and Growth (including Gsrmination, and Movements 
of Fluids). 
Pfeffer, W . — Elective Metabolism 87 
Bonnier, G . — Effect of the Electric Light on Vegetation 87 
Aloi. A . — Effect of Electricity on Vegetation 87 
True, R. H . — Influence of Sudden Changes of Turgor and of Temperature on Growth 87 
Kraus, G . — Growth in the Tropics 88 
Cuboni, G . — Germination of Lodoicea Seychellarum 88 
Dixon, H. H., & J. Joly — Path of the Transpiration Current 88 
Golden, K. E . — Movement of Gases in Rhizomes 88 
Burgerstein, A . — Vitality of Seeds 208 
Wiesner, J . — Germination of Seeds of Loranthaceae 208 
