( 3 ) 



SuMMAEY OF CiTBRENT Eeseaeohbs, &o. — continued. 



PAGE 



NortTi-Sea Annelids .. , 59 



Eclipidrilidce ., ., .. 60 



Ctenodrilus pardalis 61 



Distichopus 62 



Turriform Constructions hy Earth-worms 62 



Samingia arctica 63 



Anatomy of Prorhynchus <, 63 



Monograpfi on the Turbellarians .. .. .. .. .. 65 



Dinophilus apatris . . 67 



Life-history of the Liver Fluke . . 68 



Anhylostoma and Dochmius , .. .. 69 



New Floscularim ",. 69 



^ Challenger ' Holothuroidea 70 



Nematophores of the Hydroida . . 70 



Green-cells of Hydra 71 



Development of the Ovum of Podocoryne carnea 72 



• Challenger ' Deep-Sea Medusae ^ , . 72 



' Challenger ' Corals .. .. 73 



Morphology of the Coral-Skeleton 73 



Suctociliata, a New Group of Infusoria, intermediate between the Ciliata 



and the Acinetina ,. .. ,. 75 



New Infusorian belonging to the Genus Pyxicola 77 



Systematic Position of Amphidinium 77 



Evolution of the Peridinina , 77 



New Thuricola . . . . , , 78 



Flagellata ^ 79 



Microsporidiss or Psorospermim of Articulates 79 



Development of Gregarinss and Coccidia 80 



GregarinidcB of Annelids . . . , . . 81 



Intestinal Parasites of the Oyster 81 



Perception of Light and Colour by tJie lowest Organisms 81 



Botany. 



Development of the Pollen of Orchidese 84 



Formation of the Pollen-grains in Gymnosperms 84 



Conduction of Pollen-tubes , , , . 86 



Female Flowers of Coniferse , , , 86 



Flower adapted for Fertilization by Snails 87 



Insects and the Cross-fertilization of Flowers .. 87 



Development of the Wing of the Seed of Ehinanthus .. 87 



Nature of the Growing Point .. 88 



Apical Growth in Gymnosperms 88 



Cell-Nucleus.. .. 88 



Structure and Formation of the Cell-Nucleus 89 



Superficial Growth of the Cell-wall 90 



Mechanism of the Structure of the Cell-wall 90 



Function of Lime in Germination 90 



Structure and Function of Epidermal Tissue 91 



Influence of different conditions on the Epidermis of Leaves 91 



Influence of Light on the Assimilating Tissue of Leaves 92 



Development and Structure of Sieve- Tubes ,, ,. 92 



Anatomy of Bark ., 93 



Absorption through the Epidermis of Aerial Organs .. :. .. ,. ., 93 



Protein-Crystalloids of the Potato 94 



Sypoclilorin 94 



Crystals of Chlorophyll 94 



Crystalloids of Cupressinese 95 



Non-calareous Cystoliths 95 



Tannin and Aleurone .. .. , 96 



Phrenological Inversions 96 



Protection of Plants from the Loiver Fungi '. . , 97 



Detmer's Vegetable Physiology , 98 



Chxtopteridese .. , 98 



Development of the Spores of Salvinia 99 



Structure and Classification of Muscineie 100 



