( 3 ) 



Summary op Cdbeent Ebsbabohes, &c. — continued. 



PAOB 



Tube of Stephanoceros Eichornii 345 



Structure of Pedicellarlse 346 



Circulating Apparatus of Starfishes , ., ,. 347 



Genital Passages of Asterias 348 



Clavularia prolifera 349 



Sponges of the Gulf of Triest 350 



Spongiophaga in Fresh-water Sponges , . . 350 



New Fresh-water Sponges 351 



Organization of the Cilio-flagellata 351 



Infusorian with Spicular Skeleton 355 



Contractile Vacuole of Vorticella 355 



Geographical Distribution of Bhizopoda ,. .. 356 



Classification of the Gregarinida 356 



Psorospermias in Man 357 



Myxosporidia 358 



Morphology of Protozoa 359 



Eozoon Canadense 360 



Botany. 



Chemical Difference between Dead and Living Protoplasm 361 



Occurrence of Aldehydes in Chlorophyllaceous Plants .. . . 361 



Organ not hitherto described in the Vegetable Embryo 361 



Studies of Protoplasm 362 



Composition of the Protoplasm of ^thalium septicum 362 



Properties of the Protoplasm in Urtica urens 363 



Fertilization of Salvia splendens 363 



BeproductiDe Organs of Loranthacex 363 



Structure and Mode of Formation of Spermatozoids . . . . 364 



Cell-nucleus in the Mother-cells of the Pollen of Liliacese . . . . . . . . 366 



Crystalloids in the Cell-nuclei of Pinguicula and TJtricularia 366 



Cystoliths in Momardica 367 



Sphere- crystals 367 



Structure of Starch-grains 368 



Assimilating Tissue 368 



Fibrovascular Bundles of Monocotyledons 370 



Sieve-Tubes 370 



Structure and Functions of Stomaia .. , 372 



Stomata of Stapelia 372 



Influences of External Forces on the Direction of Growth 372 



Water Distribution in Plants 373 



Causes of the Movement of Water in Plants 373 



"Compass-flowers" 373 



Belation of Nutrition to the Distribution of the Sexual Organs of the 



Prothallium of Ferns 374 



Cell-division and Development of the Embryo of Isoetes lacustris 375 



Chemical Composition of Mosses .. '< 375 



Influence of Oxygen on the Development of the Loioer Fungi 376 



Chxlomium . . 376 



Completoria complens, a Parasite on the Prothallium of Ferns 377 



Behm's Ascomycetes 378 



Destruction of Insects by Yeast 378 



Development of Fungi on tfie Outside and Inside of Hens* Eggs 378 



Biology of Bacteria 380 



Influence of Concussion on the Development of the Schizomycetes 382 



Experimental Production of the Bacteria of the Cattle-distemper 382 



Bacteria of Caucasian Milh Ferment 383 



Parasitic Organisms of Dressings 384 



Parasitic Nature of Cholera 384 



Parasitism of Tuberculosis 384 



Experimental Tuberculosis 385 



Etiology of Tubercular Disease 385 



Structure and Development of the Apothecia of Lichens 388 



Structure of Crustaceous Lichens 389 



Ccenogonium and the Schwendenerian Theory 389 



Crystalloids of Marine Algse 390 



a 



