878 



INDEX. 



O 



Oai and Gooseberry Mildew, 392 



— Mildew, 78. 508 



— (ieinnobolus sp. Parasitic, 393 

 Oak-tree Slime-flux, Mvculogical Flora, 



516 



Oaks. Anguillulidae of the White Slime, 

 361 



Oats, Ergot, 391 



Obelia, Effect of Light. 212 



Oberstein-Breslau, O., Cicinnobolus sp. 

 Parasitic on Sphserotheca mors-uvee, 

 392 



Obituary, F. H. Gillot, 799 

 - Carolyn Wilson Harris, 90 



Object-holder, Simple, for Photomicro- 

 graphy: Tables of Magnifications, 

 103 



Objective Mount with an Iris, 283 



— Screw Threads. Anomalies, 175, 283 

 Objectives and Eye-pieces, New, by R. 



Winkel of Gottingen, 284, 451 

 Objectives. See Contents 

 Ocular, Edinger's Pointer- Double, 252 

 Odhner, N., Genus Cumanotus, 39 

 O'Donoghue, C. H., Duplicity in Cluck 



Embryos, 33 

 Odontopteryx, New Species, 613 

 Oenothera, Chromosome-reduction, 370 



— Mutants and Hybrids, Chromosomes,370 

 Offord, J. M., 137 



Ohta, R., Fat-destroying Fungi, 677 

 Oidium of Japanese Euonymus, 78 

 Okajima, K., Ear of Urodela, 193 

 Okamura, K., Japanese Marine Algae, 229 

 Okamura, S., Japanese Bryophytes, 783 



— New Japanese Mosses, 495 

 Okapi, Atlas, 36 



Oknoff, M., Internal Structure of Pearlitic 

 Steel, 828 



Olfactory Structures in Galatheid3, 623 



Oligochaet Commensals in Spongilla car- 

 teri, 469 



Oligochaeta, Littoral, of the Clyde, 758 



Olive-fly, Parasites, 619 



Oliver, R. B , Ferns of the Kermadec 

 Islands, 64 



Omeliansky, W. L., Pigment of Azotobacter 

 Chroococcum, 686 



Oocyte, Primary, of Asterias forbesii, Po- 

 larity, 472 



Oogenesis, in Dytiscidae, 198 



— in Mammals, 344 



— in Pelagia, 473 



Oospora Ihigualis, Rapid Method for Iso- 

 lating, 548 

 Ophioglossaceae, Origin of Medulla, 643 

 Ophioglossum, Forms, 643 



— palmutum. 111 



Morphology, 642 



Ophiurans, North Pacific, 472 

 Opisthobranchs of South Africa, 39 



Oppel, A., New Kind of Cell in Brunntr's 



Glands. 349 

 Optical System with regard to Perspec- 

 tive, Pupil, 817 

 Optics, Microscopical. See Contents 

 Orange and Peach, Gum-inducing Diplo- 



dia, 672 

 Orchids, Bacterial Diseases, 802 

 ( »rganisms, Intestinal, Survival in Cooked 

 Meats, 403 



— Marine, Photogenic Function, 355 

 Oriental Sore, Methods of Investigating, 



261 



Orueta, D. de, Apparatus for Photo- 

 micrography with the Microscope 

 standing in any Position, especially 

 in Inclined position, 423, 588 



Osborn. T. G. B., Spongospora subterranea, 

 401, 685 



OsciUatoria rubescens, 389, 662 



Oshima, H., Luminous Organs in Fishes, 

 745 



Osmotic Growths, 191 



— Pressure, and the Form and Structure 



of Plants, 484 

 Osruundaceae, Anatomy, 645 



— Fossil, 379 



Osseous Tissue, Method for Studying. 551 

 Ostenfeld, C. H, Arctic Plankton, 789 



— Diatoms and Flagellatae from East 



Greenland, 660 



— Halosphaera and Flagellatae, 660 



— Thorosphaera, 71 

 Ostracods from Funafati, 47 



— from Madeira, 757 



Ova and Larvae, Teleostean, 35 



— and Sperms, Influence of Radium Kays, 



185 



— of Cerebratulus. Experiments, 762 



— Sea-urchin, Extra-ovate Experiments, 



363 

 Ovaries in some Polyclads, Two-fold 

 Function, 761 



— in Starfish. Seasonal Retrogression, 52 

 Ovariotomy, One-sided, Effects on Sex of 



Offspring, 454 

 Ovary in Hybrid Birds, 604 



— State of, in Hybrids of Goldfinch and 



Canary, 455 

 Overton. J. B., Living Cells in Relation to 



Transpiration and Sap-flow, 482 

 Oviduct of Domestic Fowl, Ligaments, 



35 

 Ovifak Iron, 713 

 Oviparity and Viviparity in Dung-fly, 



198 

 Ovule and Embryo-sac of the Platanaceae, 



775 

 Ovum, Mammalian, Maturation, 603 



— of Ascaris megalcxephala. Fertilized, 



Compression Experiments with, 759 

 Ovarian, of Proteus, 456 

 Ox- warbles, Occurrence, 619 



