654 



INDEX. 



Nitroso-bacteria, 170 



Notonecta, Centrifuging Spermatocyte 

 Cells of, 360 



Nuclear Division in Vaucheria, 002 

 Nutrition of Marine Invertebrates, 351 

 Nutting, C. < .. American Hydroids, 581 



O 

 Obituary — 



Weissmann. August, 8 

 Object glass. " New " Zeus', 512 

 Objective Screw Thread, 230 

 Ochoterena, J., Elements of Microscopical 



T< cbnique and Vegetable Histology, 



193 

 Octopetalum gutterx g. et sp. n., 37 

 Odhner, N. H., New Arctic Opistbobrancb, 



571 

 O'Donogbue. C. H., Venous System of 



Dogfish. '245 

 02dema, Malignant, Bacteriology of, 507 

 GEsophagus, Human, Chromaffine Bodies 



along the, 242 

 GEstrous Cycle, Ovarian Factor in Recur- 

 rence of, 454 k 

 Oguma, K., Prolap&us recti in Dragon-fly, 



570 

 Oidium on Citrus Trees, 390 

 Oil of Cassia, Mounting Diatoms iD, 193 

 Oka, A.. New Species of Agnesia from 



Japan, 570 

 Okamura, K., Japanese Algae, 389 

 < )'Keefie, L„ Targlonia hypcphylla, 494 

 Olfactory Reactions in Amphibians, 568 



— Sense in Honey-bee, 572 



in Hymenoptera and Spiders, 138 



Oligocbffita from Northern India, 147 

 Oligochsete, Parasitic, from Gill-chamber 



of Land Crabs, 367 

 Olitskv, P. K.. Etiology of Typhus Fever, 



616 

 Onchocerca, Life-history of, 482 



— Migration of Larvse. 579 

 Onions, Diseases of, 610 



Onoclea, Branched Cells in Proth allium of, 



159 

 Onupidse of North Sea, 578 

 Onychophora, Distribution of, 478 

 Oospora, Pathogenic, New, 63 

 Opalina, Chromosomes in, 266 

 Ophioglossaceae, Branching in the. 382 

 Ophioglossum pendulum* 158 

 Opisthobranch, Arctic, New, 571 

 Optic Projection, 70 

 Optics, Theory of Diffraction in Relation 



to, 513 

 Organic Matter of Sea-bottom in Danish 



Waters, 352 

 Organisms, Living, Prtsent-day de Novo 



Origin of, 470 



— of Manchester Water-supply, 281 



— Motile, Responses of, 136 



1 Organisms, Sessile, Responses of, 136 

 Orr, M. Y., Distribution of Pilularia, 159 



Orthotrichum tomentosum, 52 



Orticoni, A., Bacillus perfringens and Gas 



Gangrene. 398 

 Orton, J. H., Hermaphrodite Ampbioxus. 



16 



— Notes on Holothurians, 149 



— Rate ofGrowth in Marine Invertebrates, 



20 

 ■ — Fungi in South Australia, 57 

 Osborne, T. G. B., Fungus Diseases of 



South Australia, 58 

 Osmundacese, Vascular Development in. 



492 

 Ostenfeld, C. H., Plankton of the Danish 



Seas, 496 

 Ostracod from Middle Devonian, 35 

 Ostracods from Australia, 367 



— Fresh-water, Arctic, 577 

 Northern, 577 



Ovarian Factor in Recurrence of GEstrous 



Cycle, 454 

 Ovary, Alterations Induced by Treatment 



of, 381 



— Mammalian, Interstitial Cells of, 347 

 Oviduct of Fowl, Experiments on, 239 

 Ovulation in Fowl, Effect of Corpus 



Luteum Substance on, 125 

 Ovules. Absorption in, of Scrophularia, 381 



— and Seeds of Cercis, 158 



Ox, Development of Limbs in. 559 

 Oxymitra. in North America, 51 

 Oysters, Estimating Age of, 248 



Packard. C. Effect of Radium on Fertiliza- 

 tion in Nereis, 480 

 Paine, J. H., Indian Mallophaga, 143 

 Painter, T. S., Experimental Study of 



Cleavage in Sea-urchin Ova, 486 

 Palaemons of the Philippine Islands, 366 

 Palinurus, Larval Stages of, 147 

 Paltoztoma schineri. Early Stages of, 145 

 Pancreas. Pig's, Structural Unit of, 467 

 Paraffin, Destruction of, by Bacillus pro- 



digiossus, 173 

 Paramecium, Cvcles and Rhythms in, 

 265 



— Effect of Thyroid on Division Rate of, 



376 



— Periodic Reorganization in, 264 

 Parapolytoma satura g. etsp. n., 44 

 Parasite, Dipterous, of Larval Mvceto- 



phylid, 362 

 Parasites, Trematode, of Australian Birds, 



257 

 Parasitic Protozoa. 490 

 Parasitism of Hymenochxte agtilutinans, 



170 



— Studies in the Physiology of, 610 



