XXll CONTENTS. 



Kkaus, G. — Formation of Gum- Arabic .. Parti 90 



Berthelot & G. Andee — Oxalic Acid in Plants 90 



KoPEBT, O. — Growth and Increase of Crystals in Plants „ 90 



MOBITJS, M. — Sphserocrystals of Calcium oxalate in the Cactacese .... „ 90 



SoLEEEDEE, H. — Anatomy of Combretacese „ 91 



EoTHEET, W. — Comparative Anatomy of the Stem and Rhizome in 



Herbaceous Plants ., .. „ 91 



Haupt, F. — Anatomical Structure of the Stem and of Underground 



Stolons „ 92 



Denneet, E. — Anatomy of the Stem of Cruci ferae „ 92 



Klekckee, J. E. F. AF — Anatomy of Ceratophyllum „ 93 



GuiNiEE, E. — Form of the Stem of Dicotyledons and Conifers .... „ 93 



Weiss, J. E. — Formation of Cork „ 93 



Geebeb — Annual Foy^mation of Cork in Periderm „ 93 



Kassner, G. — Pith of Woody Plants „ 93 



EiCHLEE, A. W. — Development of Palm-leaves .. ., „ 94 



Heinrichee, E. — Contrivances for Storage of Water in the Leaf .... „ 94 

 Kny, L. — Relative Resisting-power of the Upper and Under Surfaces of 



Leaves „ 95 



„ „ Protection of Leaves against the Mechanical Action of Rain 



and Hail „ 95 



SouTHWOETH, E. A. — Development of the Stomata of the Oat .... „ 95 



Keaus, G. — Contents of Sieve-tubes „ 95 



Meehan, T. — Heterophylly of Quercus prinoides „ 96 



Lengerken, A. V. — Organs of attachment of Ampelopsis „ 96 



Arcangelt, G. — Absorbing Hairs of Dipsacus „ 96 



KiENAST, H. — Oil-receptacles of Hypericum and Ruta „ 97 



Danielli, J. — Extra-floral Nectaries in Gunnera „ 97 



Clos, D. —Morphology of the Calyx „ 97 



MoBius, M. — Shimmer of the Petals of Ranunculus „ 97 



Planta, A. DE — Composition of Pollen „ 97 



Zachaeias, E. — Ovum-cells and Antherozoids ,. .. „ 98 



Mattieolo, O. — " Luminous Line " in the Seed of Malpighiaceie .... „ 98 



„ „ Seminal Integuments of Tiliacese . . . . „ 98 



„ „ Suberification in the Seminal Integument of Tilia .. „ 98 



Haez, 0. 0. — Lignification of the Testa of Seeds „ 99 



Beegeeon, J. — Strobili of Walchia piniformis „ 99 



. Solms-Laubach, Graf zu — Sexual Differentiation in the Fig .... „ 99 



Veies, H. de — Movements of Protoplasm in Tissue-cells Part 2 266 



ScHUNCK, E. — Chemistry of Chlorophyll , 267 



JoDiN, V. — Studies on Chlorophyll „ 267 



Fischer, A. — Contents of Sieve-tubes „ 268 



Baccarini, P. — Colouring Matters of Plants „ 268 



LiNDT, O. — Pigment-bodies in Neottia nidus-avis „ 268 



Weiss, A. — Occurrence of Calcium Oxalate in the Epidermal Cells of 



Acanthacese „ 269 



WlBSNER, J. — Formation of Gum in Trees „ 269 



Barbaglia, G. A. — Wax of Box-leaves „ 269 



Gardiner, W. — Stimulation of Gland-cells in Tentacles of Drosera 



dichotoma „ 269 



Scott, D. H. — Articulated Latioiferous Vessels „ 270 



