( 3 ) 



Summary of CuraiENT ReshahcheSj &c. — cotdinued. 



PAGE 



Spermatogenesis in the Neinertlnea 55 



Development of Trematocla .. .. 56 



Siinondsia parudoxa ■ 58 



Monograph of the Melicertidse 5S 



Histology of Echinodermata , . i . . 60 



Nervous System of Holothnrians .. .. .. 62 



Vascular System of Echinoderms 63 



Nervous System of Forpita •• •• *J* 



Hermudan Medusce, 65 



Alleged new Type of Sponge 65 



Biology and Anatomy of Clione * . . . . . . . . . 65 



New Sdicious Sponges from the Congo 66 



Parasiiio Infusoria 67 



Nevj Infusoria 68 



Relationship of the FlageJlafa to Alga? and, Infusoria 68 



Transformation of Flagellata into Alga-liJce Organisms 69 



Stein's ^ Infusionsthiere^ .. 70 



Cdio-Flagellata . .. .* .. .. .. 72 



Neio Chouno-Flagellata .. .. - 73 



Anatomy of Stichtilonche zanclea 73 



Studies Oil the Foraminifera 74 



Development of Stylorhynchus .. 7i 



Botany. . , 



delations of Protoplasm and Cell-wall in the Vegetahle Cell 75 



Intercellular Connection of Protoplasts 76 



Polyembryoiiy of Trifolium pratense .. 76 



Mechanical Structure of Pollen-grains 76 



Fertilization of Philodendron 77 



Fertiiization of the Prickly Pear . . . . 77 



Annual Development of Bast .. .. 77 



Lenticels and the mode of their replacement in some ivoody tissues .. .. 7S 



Gum-cells of Cereals .. 78 



Nucleus in Amylaceous Wood-cells .. .. 7!) 



Peculiar Stomata in Coniferse 79 



Boot-kairs .. .. 79 



Sieve-tubes of Cucurhita 81 



Spines of the AurantiacefB .. .. 81 



Tubers of Myrmecodia echinata .. 81 



Chlorophyll-grains, their Chemical, Morphological, and Biological Nature .. 81 



Mechanism of the Splitting of Legumes 82 



Aerial Vegetative Organs of Orchidex in relation to their Habitat and 



Climate .. .. .. ., 83 



Assimilation of Carbonic Acid by Protoplasm ivhich does not contain 



Chlorophyll .. .. 83 



Artificial Influences on Internal Causes of Growth .. ,, 83 



Absorption of Food by the Leaves tif Drosera .. 83 



Mechanical Action of Light on Plants .. .. ..' 84 



Action of the Amount of Heat and of Maximum Temperature on the Opening 



of Flowers 85 



Behaviour of Vegetable Tissues towards Gases 85 



Influence of External Pressure on tlie Absorption of Water by Boots .. .. So 

 Contrivances for the Erect Habit of Plants, and Influences of Transpiration 



on the Absorption of W^atar . . .. .> .. ,. .. 85 



Sap 86 



Solid Pigments in the Cell-sap .. .. .... .. .. .. 86' 



Movement of Sap) in Plants in the Tropics ,. .. 87 



Exudation from Flowers in Relation to Honey dew ,. 87 



Latex of tite Eupliorbiacex 8S 



Crystalloids in Trophoplasts, and Cliromoplasts of Angiospcrms 89 



Formation and Resorption of Cystoliths 90 



Function of Organic Acids in Plants !tO 



Formation of Ferments in the Cells of Higher Plants 91 



Paulsen's Botanical Micro-Chemistry .. .. 91 



Classification of Ophioglossaceas 92 



Structure of Ildmintiiostachys , 92 



