XXIV CONTENTS. 



PAGE 



Sablon, Leclerc DU — Reproduction of the Fig Tree 183 



Vert, Germano — Pollen-grain 184: 



Smith, F. G. — Development of Microsporangium in Cycads 439 



Gates. R. R. — Pollen Development in Hybrids 4-^9 



Chamberlain, C. J. — Ovule of Dioon '. 440 



Carothers, I. E. — Development of Ovule in Ginhgo 440 



Cook, M. T. — Embryogeny of Cuban Nymphxaceai 440 



Young, W. J. — Development and Embryology of Melilotus alba 441 



Cook, M. T. — Embryology of Rhytidophyllum 568 



Jeffrey, E. C. & ^I. A. Chrysler — Microgauietophyte of the Podocarpinese .. .. 688 



KiLDAHL, N. J. — Pro-embryo of Pinus Laricio 688 



KiRKWOOD, J. E. — Pollen-formation in Ctircurhitaceee 688 



Cook, M. T. — Embryology of Rhizophora Mangle 689 



Physiology- 

 Nutrition and Growth. 



Lef^vre, M. J. — Development of Crreen Plants in Absence of Carbon Dioxide . . 58 



VocHTiNG, H. — Regeneration and Polarity in Higher Plants 59 



Spalding, V. M. — Desert Shrubs and Atmospheric Moidure 59 



RiCHTER, O. — Physiology of Diatoms 59 



Becquerel, P. — Respiration of Seeds in Latent Condition 184 



KoRESSi. pRANydis — Increase in Groicth of Trees 184 



Maige, A. — Respiration (f the Floicer 319 



Dixon, H. H. — Transpiration Current in Plants 441 



Stoklasa, J., & others — Anaerobic Respiration 442 



Nicolas. G. — Respiration of Aerial Vegetative Organs 442 



LiNSBAUER, K. — Aerial Hoots of Aroids 569 



MaoDougal. D. T. — Hybridisation of Wild Plants 5G9 



EwART, A. J. — Ascent of Water in Irees 689 



JOST, L. — Self-Sterility of Flowers 689 



Irritability. 



Gassner, G. — Galvanotropism of Roots *. 59 



LUBIMENKO, W. — Effect of Light and Temperntme upon Chlorophyll Assimilation 60 



„ „ Action of Liglit upon Transformation of Sugars 60 



Griggs, R. F.— Rotation of Leaves of Marsiha 60 



Lesarge, P. — Action of Electricity upo7i Germinaticm 319 



Henckel. A.. & A. TscHEKNJAJfcw — Metallolropimi of Phycomyces nitens .. .. 319 



Mast, S. O. — Light Reactions in Volvox 442 



Selby. A. D.— Etiolation 443 



Lubimenko, W. — Influence of Light 071 Assimilation 443 



Hildebrand, F. — Fruit-stalk of Cyclamen 443 



Chemical Changes. 



JoFFRix, H. — Action of Water on Aleurone Grains 184 



Gautier, A. — Leaf Coloration 185 



Slade — Plant Mutation 185 



General. 



Gleason, H. A. — Pedunculate Species of Trillium 61 



GiLTAY, E. — Corolla in Relation to Insects 61 



Reed, H. S.. & I. Smoot — Seed-dispersal in Polygonum virginianum 61 



Scott, D. H. — The President's Addrcfs: The Flowering Plants of the Mesozoic Age 



in the Light of Recent Discoveries (P\Atti&\l. to \jL.) 129 



Kalkhoff, E. D. — Variation in Ophrys aranif era 185 



