CONTENTS. XXIU 



PAGE 



Lange — Acidity of the Cell-sap .. .. Part 4 606 



ScHUNK, E. — Chemistry of Chlorophyll „ 606 



TscHiECH, A. — Researches on Chlorophyll „ 606 



Hansen, A. — Researches on Green and Yellow Chlorophyll „ 606 



Kronfeld, M. — Raphides in Typha „ 607 



Heimeel, A. — Calcium oxalate in the Cell-wall of Nyctaginem „ 607 



WiLDEMAN, E. DE — Presence of a Glucoside in the alcoholic extract of certain 



plants „ 607 



Erreea, L., C. Maistriau, & G. Clattriau — Localization and Significance 



of Alkaloids in Plants „ 607 



Martin, S. — Pt^oteids of the Seeds of Ahrus precatorius Part 5 773 



ScHULZE, E. — Cholin in Seedlings „ 774 



Eaunkiaer, 0. — Crystalloids in Stylidium and jEschynanthus „ 774 



Westeemaier, M. — Occurrence and Function of Tan7iin in Tissues „ 774 



Geiessmater — True Nature of Starch Cellidose ,, 774 



Chmielewskt, V. — Structure of Chlorophyll-grains Part 6 982 



Petbod, J. — Hourly Variations in the Action of Chlorophyll „ 982 



Meyer, A. — Starch-grains coloured red by Iodine „ 982 



Chmielewskt, V. — Proteinaceous bodies in Epiphyllum „ 983 



Arnaud, A. — Carrotene in Leaves „ 983 



TsCHiRCH, A. — Calcium oxalate in Aleur one-grains „ 983 



MOLISCH, H. — Nitrates and Nitrites in Plants „ 983 



Stahl, E. — Biological Import of Raphides „ 983 



C3) Secretions. 



Berthelot, M., & E. Andre — Formation of Oxalic Acid in Vegetation .. Parti 108 



Planta, de — Chemical composition of certain Nectars Part 3 425 



Kassner — Caoutchouc in Plants Part 4 607 



Heckel, E., & F. ScHLAGDENHAUFFEN — Secretion of Araucaria Part 6 984 



(4) Structure of Tissues. 



Haberlandt, G. — Assimilating System Parti 109 



PoTONiE, H. — Vascular Bundles of Zea Mays „ 109 



Fritsch, C. — Interruption in the Pith of Coniferx „ 110 



Karsten, H. — Ant-entertaining Plants ^ 110 



PiEOTTA, J. K., & L. Marcatili — LaticiferQus Vessels „ 110 



MtJLLER, N. J. C. — Molecular Structure of Vegetable Tissues Part 2 259 



Vries, H. de — Nuclear Sheath , . , . 259 



Gerber, a. — Annual Formation of Cork 259 



D'Arbaumont, J., & L. MoROT — Pericycle „ 259 



Kny, L. — Development of Tracheides ^ 260 



TiEGHEM, p. Van, & H. Douliot — Central Cylinder of Stem „ 260 



DODLIOT, H. — Structure of Crassulacem 260 



Lecomte, H. — Anatomy of Casuarineae 260 



Marktanner-Turneretscher, G. — Anatomical Structure of Loranthaceae .. „ 261 



Mellink, J. F. A. — Formation of Thullx 261 



Vesqub, J. — Epidermis as a Reservoir of Water 261 



„ „ Aquiferous System in Calophy Hum 261 



Vines, S. H., & A. B. Kendle — Vesicular Vessels of the Onion „ 262 



Baranetzki, J. — Thickening of the wall of parenchymatous cells Part 3 426 



VuiLLEMiN, P. — Endoderm of Senecio Cineraria 426 



Wieler, a. — Cambium of the Medullary Rays , 426 



Gregory, Emily L. — Pores of the Libriform Tissue „ 426 



Heineioheb, E. — Albumen-vessels in the Cruciferse and allied orders .. .. ,, 427 



