XX CONTENTS. 



PAGE 



CoUenchyma Part 5 768 



Chemical Nature of the Cell-nucleus „ 769 



Metastasis in the Vegetable Organism „ 770 



ffydrostatic Tension as a Cause of Movements of the Sap 



and of Various Organs ,, 771 



Poulsen's ^ Botanical Micro-Chemistry' „ 772 



Chemical Difference between Living and Dead Protoplasm . . Part 6 906 



Formation and Growth of the Cell-wall „ 908 



Cell-sap and Cell-contents „ 909 



Growth of Starch-grains „ 909 



Structure of Stomata „ 910 



Bordered Fits „ 911 



Gum-passages in the Sterculiacece „ 911 



Fosanoff's Clusters of Crystals , 912 



Assimilating Tissue of Few-leaved Plants „ 912 



Structure of Climbing Plants „ 913 



Monotropa Hypopitys „ 913 



Influence of Light on Germination „ 914 



Influence of Intermittent Light on the Formation of 



Chlorophyll „ 914 



Decomposition of Nitrates by Plants in the Dark .. .. „ 914 



Inflv£nce of Gravitation on Plants „ 914 



Influence of Physical Conditions on the Forms of Water- 

 plants „ 915 



Eespiration of Plants „ 916 



Colours of Spring Flowers „ 916 



Action of Anaesthetics on the Sensitive Organs of Plants .. „ 917 



Albuminoids of the Fig „ 918 



Paracholesterin „ 918 



Formation of Xanthin in the Germination of Seeds .. ,. „ 918 



De CandoUe's ' Phytography' „ 919 



B. — Crtptogamia. 



RabenhorsV s ' Cryptogamic Flora ' Part 1 78 



Classification of Thallophytcs Part 2 273 



Classification of Thallophytcs Part 3 486 



Classification of Gloeophytes (Thallophytes) Part 6 920 



Cryptogamia Vascularia. 



Prothalliitm of Lycopodium Part 1 78 



Germination and Sexual Generation of the Marattiacece ., „ 79 



Developjment of Sterile Sporangia in Isoetes lacustris . . Part 2 275 



Apical Cell in the Adventitious Buds of Ferns Part 4 635 



Sadebeck's *■ Vascular Cryptogams' Part 6 921 



Collateral Vascular Bundles in the Leaves of Ferns . . , , „ 921 



Phyllocladus „ 922 



Hibernating Prothallia of Equisetum „ 922 



Muscinese. 



Structure of Orthotrichum Part 1 81 



Structure of Orthodontium .. .. „ 82 



