Ekoobd op Current Ebsearohes, &c. — continued. 



FACE 



Spongiological Studies 894 



Development of Horny Sponges 897 



Eeticukirian Bhizopods 897 



Structure of Haliphysema Tumanoudczii 898 



Observations on New Infusoria, ^ 899 



Influence of the different Colours of the Solar Spectrum on Infusoria .. .. 900 



Lithamaiba discus, a new Ehizopod 900 



JVeic ilfoneron (Plate XXVI.) 901 



Eozoon Canadense 902 



Botany. 



Development of the Emhryo of Phanerogams 902 



Development of the Emhryo-sac of Angiosperms 903 



Angiosperms and Gymnosperms 905 



Nucleus of the Embryo-sac 907 



Gymnospermy of Conifers 907 



Reproductive Orgayis of Cycadex 908 



True Mode of Fecundation of Zostera marina 908 



Arrangement and Growth of Cells 908 



Various Forms of the Cell-nucleus 909 



Conducting Tissue for the passage of Pollen-tubes 910 



Seminal Integuments of Gymnosperms 911 



Relationship of Interctllular Spaces to Vessels 912 



Peculiarities in the Power of Living Parts of Plants to conduct Electricity 912 



Influence of Electricity on Vegetation 912 



Absorption of Rain and Devi by the Grreen Parts of Plants 913 



Decrease of the Power of Absorption in Branches dipped in Water .. .. 913 



Water -pores 913 



Respiration of Plants 914 



Respiration of 3Iarsh and Water Plants 915 



Influence of Light, Warmth, and Moisture on the Opening and Closing of 



the Anthers of Bulbocodium vernum 915 



, Chemical Researches on the Formation of Coal 915 



New Carbo-hydrate 916 



Calcium phosphate in the Living Cells of Plants 916 



Germination of Fern-spores 916 



Bilateralness of ProthalUa 917 



Development of the Prcthallium of Salvinia 918 



New Bryum 919 



Structure of Chxtomium 919 



Proposed New Genus of Fungi — Peniophora 920 



Vine Fungi . . 920 



Propagation of Cluster-cups ; 920 



Onion-smut, Urocystis Cepulx 921 



Lagenidium Rabenhorstii, a 7iew Phycomycete 921 



Protomyces graminicola 922 



Conidial Fructification in Mucorini 922 



Beech Disease, Phytophthora Fagi 923 



Berggrenia — New Genus of Discomycetes 923 



Microphytes 171 the Blood and their rekition to Disease 924 



Crenothrix polyspora, the Cause of the TJnwholesomeness of the Berlin Water 925 



Fungi Parasitic on Fungi 926 



Poison of Marsh Fever 926 



Development of Bacteria 927 



Experimental Researches on a Leptothrix 928 



Antidote to Bacteria -poisoning in Frogs 928 



Sugar-refining Gum, Leuconostoc meseiiteroides 928 



Excresr-enses on the Root of the Alder 929 



Vitricole Lichens and the Schwendenerian Hypothesis 929 



Parasitism of Lichens on Mosses 930 



Colorific Properties of Lichens 930 



Microgonidia 931 



Formation of the Siphm^s and Tetraspores in Polysiphonia 932 



Fertilization of Red Algx by the Agency of Infusoria 932 



