CONTENTS. XXV 



PAGE 



Kathay, E. — Distribution of the Sexual Organs in the Vine Part 2 249 



Keonfeld, ilf. — Constancy of Insects in visiting Flou'ers „ 249 



Meehan, T. — Fertilization of Lonioera japonica „ 249 



Heimerl, a. — Fertilization in the Nyctaginex „ 249 



Meehan, T. — Cross-fertilization in Hydrangea „ 250 



,, „ Life-history of Yucca „ 250 



Akcangeli, G. — Flowering of Euryale ferox „ 250 



„ „ Germination of the Seeds of Euryale ferox „ 250 



Winklee, A. — Germination of the Hazel „ 251 



PiBOTTA, E. — Fertilization of Amor phophallus Rivieri Part 3 411 



ScHULZ, A. — Cleistogamic Floa-ers , 412 



GlKKD, A..— Parasitic Castration of Lychnis dioica „ 412 



Tomes, A. — Fly-catching Habit of Wrightia coccinea „ 412 



Vries, H. DE — Intracellular Pangenesis .. .. Part 4 547 



Meehan, T. — Dichogamy „ 548 



LxJDWiG, F. — Fertilization by Snails „ 548 



Dammer, U. — Diclinism and Hermaphroditism Part 5 667 



Eliot, W. G., & W. Teelease — Trhnorphism of Oxalis „ 667 



Mattei, G. E. — Pollination by Lepidoptera „ 667 



Pammel, L. H. — Perforation of Flowers by Insects , . „ 667 



EoBEETSON, C. — Flowers and Insects Part 6 781 



Meehan, T. — Dimorphism of Polygonum „ 781 



HiLDEBBAND, F. — Properties of Hybrids „ 781 



(2) Nutrition and Growth (including Movements of Fluids). 



SCHNETZLEB, J. B. — Resistance of plants to causes which alter the normal 



state of life Part 1 89 



Jentys, S. — Action of Oxygen under high pressure on gi-owth „ 90 



DiETZ, S. — Influence of the Substratum on the Growth of Plants „ 90 



Hartig, E. — Conduction of Plants through the Alburnum „ 90 



Vines, S. H.— Relation between the formation of Tubercles and the presence 



of nitrogen in the soil Part 2 251 



WiELER, A. — Conduction of Water through the Wood „ 251 



Detlefsen, E. — Absorption of Light in assimilating leaves Part 3 412 



Frank, B. — Absorption of Nitrogen by Plants „ 412 



WoBTMANN, J. — Physiology of Growth Part 4 548 



WiESNEE, J. — Descending Current of Water „ 548 



DouLiOT, H. — Influence of Light on the Development of Bark „ 549 



Gulbe, L. A. — Periodical Activity of the Cambium in the Roots of Trees .. „ 549 



Margin, Ij.— Penetration and Escape of Gases in Plants ,, 549 



Frank, B. — Assimilation of Free Nitrogen by the Lower Organisms . . . . „ 550 



JtiMELLE, H. — Development of Annual Plants Part 5 668 



EosENTiNGE, KoLDERTJP — Influence of External Agents on the Polarity and 



Dorsiventral Structure of Plants ,, 668 



KoNONCZtFK, P. — One-sided Hardness of Wood „ 669 



Mer, E. — Influence of Exposure on the Growth of the Bark of Conifers .. ,, 669 



JuMELLE, H. — Chlorophyllous Assimilation and lYanspiration ,, 669 



„ „ Influence of Mineral Substances on the Growth of Plants . , „ 669 



Arcangeli, G. — Trophilegic Function of Leaves „ 670 



Haetig, E. — Movement of Sap in the Wood „ 670 



Devaus, H. — Exchange of Gases in Submerged Plants ,, .. „ 670 



Chmielewskij, W. — Absorption of Water by Leaves „ 671 



EODEWALD, H. — Changes of Substance and Force connected with Respiration „ 671 



Mullee, T. — Influence of ^^ Ringing " on Grovith „ Part 6 781 



