( 3 ) 



Summary op Current Ebskarohbs, &c. — continued. 



PAOE 



New Botifers 893 



Observations on Motif era (Mdicerta) .. .. 894 



Echinoidea of the ' Challenger * JExpedition .. .. .. 895 



Morphology of the Sur-Anal Plate 896 



Comatulse of the Leyden Museum .. .. , 896 



Shortened Development in the Biscomedusas 896 



"Mouth-arms" of the Bhizostomidm , 897 



Supposed Heteromorphio Zooids of Sponge 899 



Habits and Structure of Clione ,. .. 899 



Soft Parts of Euplectella aspergillum 899 



Spongiophaga in Fresh-water Sponges 901 



New Genera of Fresh-water Sponges: .. . . . . . . 901 



Biology of the Inferior Organisms ., 901 



Infusoria Parasitic in Cephalopods .. .. 902 



Flagellata 903 



Structure of Trichodina steinii 905 



Fission of Monofhdlamous Bhizopods ., .. 905 



Botany. 



Chemical Difference between Dead and Living Protoplasm 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 Pits .. 911 



Gum-passages in the Sterculiacese .. 911 



Bosanoff'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 Clilorophyll 914 



Decomposition of Nitrates by Plants in the Dark .. 914 



Influence of Gravitation on Plants .. .. 914 



Influence of Physical Conditions on the Forms of Water-plants .. ., .. 915 



Bespiration of Plants 916 



Colours of Spring Flowers , . .. 916 



Action of Aneesthetics on the Sensitive Organs of Plants 917 



Albuminoids of the Fig 918 



ParacJiolesterin .. .. .. , .. .. 918 



Formation of Xanthin in the Germination of Seeds *. .. 918 



De Candolle's' Phytography' 919 



Classification of Gloeophytes (^Thallophytes) 920 



Sadebeck's Vascular Cryptogams .. .. 921 



Collateral Vascular Bundles in the Leaves of Ferns • •• 921 



Phyllocladus 922 



Hibernating Prothallia of Equisetum 922 



European Species of Badula 923 



Structure of Marchantiese 923 



Nomenclature of Discomycetes . , . . . . 925 



Vegetative Budding of Pistillaria pusilla 925 



Structure and Germination of Sorosporium .. .. .. .. • . . . • • 925 



New Disease of Birds 926 



Chemical Composition of Moulds 926 



Phenomena of Growth in the Mucorini 926 



Microscopical Organisms in the Intestinal Canals 927 



Fungi of Diseases of the Teeth 927 



Bacillus of Leprosy .. ., 927 



Vegetable Ferments and the Action of certain Poisons on Vegetable Cells . . 928 



Algological Notes 929 



Sexual Beproduction of Phseosporeie 929 



Bed Colouring Matter of Chlorophyceie 930 



Studies on Vaucheria 930 



Parasitism of Chlorochytrium 931 



