INDEX. 



1031 



" Not an Optician," 465. 



Nuclear Division in Actinosphserium 

 eichhornii, 580, 761. 



, Indirect, 713. 



Nuclei, Formation of and Keactions of, 

 713. 



of Infusoria, 905. 



Nucleus and Nuclear Division in Pro- 

 tozoa, 398. 



, Cell-, Division of, 407. 



in Amylaceous Wood-cells, 79. 



of Auditory Epitnelium of Ba- 



trachians, 715. 



, Structure and Division of, 915. 



, Vitelline, of Araneina, 224. 



Nudibranchs, Further Kesearches on, 



38. 

 Nusslin, 0., 908. 

 Nunn, R. J., 147. 



Pillar and other Slides, 123. 



Nussbaum, M., 357. 



0. 



Objective Attachment, Bulloch's, 118. 



Changers, 809. 



, Engelmann's Micro-spectral, 958. 



, Swift and Son's new 1-in., 976. 



, Zeiss's A * (Variable), and 



« Optical Tube-length," 450. 



Objectives, Endomersion, 616. 



■ , " High-angled," 450. 



— — , Homogeneous-Immersioa, Correc- 

 tion-Adjustment for, 620. 



, , Paraboloid as an Illu- 

 minator for, 453. 



■ of Wide Aperture, Mode of 



Vision with, 20. 



, Selection of a Series of, 445, 620. 



, Spencer's Dust-protector for, 959. 



(Ecanthus niveus and its Parasitic 

 Teleas, Development of, 553. 



Oettinger, 921. 



O'Hara, R., 335. 



Olfactory and Auditory Organs of 

 Spiders, 886. 



and Optic Organs of Human 



Embryos, Development of, 201. 



Olivier, L., 98. 



Oilar.l, J. A., 302. 



Onchidia, Affinities of, 870. 



Onion, Corauiou Parasitic Nematode of, 



232. 

 Opaque Mounts, Crimson Lake for, 324. 



Objects, New Slide for, 813. 



Opening of Flowers, Action of Heat 



and of Maximum Temperature on, 85. 

 OfK^rcuhim and Foot-glands of Gastro- 



pfjda, 869. 



of Gasteropoda, 207. 



OpliiogloHsaccm, Cliissification of, 92. 

 Opistliotrtma, a New Trcmatodc, 384. 



Optic and Olfactory Organs, Develop- 

 ment of Human Embryos, 201. 

 "Optical Tube-length " and Zeiss's 



A * (Variable) Objective, 450. 

 Orbulina universa, 579. 

 Orchidefe, Aerial Vegetative Organs of, 

 in Relation to their Habitat and 

 Climate, 83. 

 " Orderic Vital," 465. 

 Oreaster, Revision of Genus, 574. 

 Oribatidfe, Michael's British, 741. 



, ■ , Type Series of, 500. 



, Shrinking back of Legs of, in 



Mounting, 635. 

 Orley, L., 745. 

 Orth, J., 465. 



Orthoptera and Neuroptera, Classifica- 

 tion of, 220. 

 Osborn, H. F., 325, 978, 993. 



, H. L., 367. 



Osborne's (Lord S. G.), Diatomescope, 



802, 961, 975. 

 OsciJlaricas, Movements of, 435. 



, New Genus of, 107. 



Osmotic Power of Living Protoplasm, 



764. 

 Osmunda and Todea, Apex of Leaf in, 



923. 

 Osol, k., 598. 



Otocysts of Arenicola grubii, 380. 

 Oudemans, C. A. J. A., 266. 

 Ova, Herring, Natural and Artificial 



Fertilization of, 862. 

 Ovum and its Fertilization (in As- 

 caris), 565. 



, Constitution of, 354. 



of Geophili, 557. 



, Polar Globules and other Ele- 

 ments eliminated from, 535. 

 Owen, E. W., 325. 



Oxidizable Constituents of Plants, 

 Easily, 255. 



Substances in Plant Sap, Easily, 



921. 

 Oxley, F., On Protospongia pedicellata, 



a new compound Infusorian, 530. 

 Oxygen, Action of Light on the Elimi- 

 nation of, 257. 



, , on Low Organisms, 601. 



, the different Rays of Light 



on the Elimination of, 411. 



, Compressed, Attenuation of Virus 



in Cultivations by, 599. 



, Constant Production of, by the 



Action of Sunlight on Protococcus 

 pluvialis, 273. 



, Influence of, at High Pressure on 



Bacillus aiithracis, 267. 

 Oysters, Japanese, Diatoms from 



Stoniaclis of, 791. 

 Ozone, Exhalation of, by Flowering 

 Plants, 777. 



