CONTENTS. XXV 



Campbell, D. H. — Peculiar Embryo-sac in Peperomia pellitcida 217 



Bouin. M. & P. — Filaments in the Protoplasm of the Mother-cell of the Embryo-sac 218 



Tischlei; — Cellulose-Bands in the Embryo-sac of Pedicularis 218 



Knuth, P., & others — Cross-Pollination and Self-Pollination 219 



Knuth's Handbook to the Biology of Flowers 219 



Guignard, L. — Double Impregnation in Tali pa 349 



Cavara, F. — Embryogeny of Thea 350 



Campbell, D. H. — Embryo-sac of Spar ganium 350 



Arnoldi, W. — Embiyogevy of Cephahitaxns 350 



Wiegand, Karl M. — Development of the Pollen in Convallaria and Potamogeton .. 351 



Lovell, John H., & others — Cross-Pollination and Self-Pollination 351 



Guignard, L.— Doicble Impregnation in Tulipa 481 



Wojcioki, Z. — Fertilisation in the Conifene 482 



Arnold, W. — Endosperm of Sequoia 482 



Merrell, W. D. — Embryogeny of Silphium 483 



Chodat, R., & C. Bernard — Embryogeny of Lathrma 483 



Johnson, I). S. — Embryo-sac of Saururus 483 



Duggar, B. M. — Development of the Pollen-grain in Symplocarpus and Peltandra 483 



Ord, G. W., & others— Cross-Pollination and Self-Pollination 484 



Vbibs, H. de — Law of" Splitting" of Hybrids 484 



Webber. H. J. — Hybridisation in Citrus 485 



Nawaschin, S. — Impregnation in Dicotyledons 602 



Campbell, D. H. — Embryology of the Araccte 603 



Hill, T. G. — Embryology of Triglochin 603 



Lotsy, J. P. — Embryology of Balanophora globosa 604 



Lloyd, F. E. — Embryology of Vaillantia 604 



Ramaley, F. — Embryo-sac of Leucocrinum 604 



Lang, W. H. — Ovule of Stangeria 604 



Schaffner, J. H. — Division of the Megaspore in Erythronium 605 



Thomas, Ethel N. — Vermiform Sexual Nuclei in Caltha 605 



Arnoldi, W. — Germinal Vesicles of the Abietinese 605 



Jen cio, A. — Pollen of Hybrids 606 



Correns, C. — Descendants of Race- Hybrids 606 



Moebius, M„ & E. Goebel — Relationship between Parasitism and Sexual Repro- 

 duction 689 



Guignard, L. — Double Impregnation in Angiosperms 689 



Wiegand, Karl M. — Embryo-sac of Monocotyledons 689 



Johnson, D. S. — Endosperm and Embryo of Peperomia 690 



Cannon, W. A. — Embryology of Arena fatua 690 



Conrad, Abram H. — Embryology of Quercus 691 



Pibotta, P., & B. Longo — Fertilisation of Cynomorium 691 



Vries, H. de, & H. J. Webber — Hybrid Fecundation (A*e?»«) in Maize .. .. 691 



Webb, W. M., & others — Hybridisation 692 



Tschermae, E. — Artificial Crossing of Pisum sativum 692 



(2) Nutrition, and Growth (including Germination, and 

 Movements of Fluids). 



MacDougal, D. T. — Symbiosis and Saprophyiism 81 



Ldtowslawski, J. — Absorption of Nitiogen by Leguminosse 82 



Stahl-Schkoder, M. — Function of Sodium 82 



Bolrcet, P. — Absorption of Iodine by Plants 82 



Teodoresco, E. C. — Indirect Action of Light on the Stem and, Leaves 82 



„ „ Influence of the different Solar Rays on the Form and Structure 



of Plants 83 



Eeler, H. — Influence of Electricity on Plants 83 



Daniel, L. — Grafting of Monocotyledons on themselves 83 



Coulter, Stanley — Germination of Seeds 83 



Thiselton-Dyer, W. T. — Influence of a very Low Temperature on the Germination 



of Seeds 84 



Jodin, V. — Resistance of Seeds to High Temperatures 84 



Chamberlain, H. W. — Ascent of Sap • 84 



