884 
INDEX, 
Noniewioz, E., Staining Bacillus of 
Glanders, 550. 
Norman, A. M., Bathynectes, a British 
Genus, 342. 
, Lepton squamosum, 331 . 
Norwegian North Sea Expedition, Pycno- 
gonidea of, 185. 
Nosioc , 233. 
Notochord in Human Embryo, Formation 
of, 22. 
Notommata cuneata, 305. 
Nubecularia depressa , 572. 
nodulosa, 573. 
Nuclear Division, Suitable Object for 
Study of, 173. 
Origin of Protoplasm, 208. 
Nuclei, Difference between, of Male and 
Female Reproductive Organs, 714. 
, Sexual, in Plants, 623. 
Nucleolar Staining, Differential, 690. 
Nucleus, Function of, 614. 
of Oomycetes during Fecundation, 
632. 
of Sponges, 54. 
, Role of, in Formation of Muscular 
Reticulum in Larva of Phrygane, 461. 
Nuculidae, Otocysts of, 178. 
Nudibranchs, Liver of, 725. 
Nusbaum, J., Embryology of Isopoda, 343. 
, Morphology of Isopod Feet, 593. 
Nussbaum, M., Trembley’s Experiments 
with Hydra, 483. 
Nutation, Carpotropic Curvatures of, 372. 
Nutrient Layer in Testa, 61. 
Substratum, Silicate Jelly as, 824. 
Nutrition of Phanerogamia. See Con- 
tents, xxv. 
Nuttall, G. H. F., Contributions to our 
knowledge of Immunity, 245. 
, Estimation of number of Tubercle 
Bacilli in phthisical sputum, 833. 
Nyctitropic Movements of Leaves, 372. 
Nymphaeaceae, Leaves of, 64. 
O. 
Objective, relation between Aplanatic, and 
Diffraction Gratings, 665. 
Changer, New, 519. 
Objectives, Amplifying Power of, in the 
Compound Microscope, 114. 
, New System of Erecting and Long 
Focus, 246. 
Obregia, A., Method for fixing Preparations 
treated by Golgi’s Method, 536, 830. 
Ocelli of Lithohius, 590. 
Ochler, A., Hooked Joints of Insects, 33. 
Octopod Cephalopoda, Development of 
Chromatophores of, 175. 
Ocular Diaphragm, New, 255. 
Oculars, Amplifying Power of, in the 
Compound Microscopes, 114. 
Odoriferous Organs of Lepidoptera, 337. 
Odour of Flowers, Influence of External 
Factors on, 498. 
(Edipoda fa^ciata, Demonstrating Struc- 
ture and Termination of Muscular 
Nerves in, 421. 
(Enothereae, Extra-phloem Sieve-tubes in 
Root of, 619. 
Ogata, M., Germicidal Substance of Blood, 
797. 
, Substance in Blood destructive of 
Bacteria, 647. 
Oil-decomposing Ferment in Plants, 221. 
, Essential, in Tissue of Onion, 209. 
Oil, Immersion, Glasses for keeping, 812. 
Oka, A., Freshwater Polyzoa, 457. 
, Method of Observing Pectinatella 
gelatinosa, 539. 
Okada, — , Pathogenic Bacillus obtained 
from Floor-dust, 513. 
Olfactory Organ of Triton and Ichthyophis , 
Investigation, 827. 
Oligochseta, Homology between Genital 
Ducts and Nephridia in, 194. 
, Naidiform, 596. 
, Structure of, 194. 
Oligochsetous Annelid, New Form of 
Excretory Organ in, 596. 
Olliff, A. S., iDsect-larva eating Rust on 
Wheat and Flax, 461. 
Oltmanns, F., Influence of Concentration 
of Sea-water on Growth of Algae, 777. 
Ommatidium, Is it a Hair-bearing Sense- 
bud ? 32. 
Onderdonk, C., Movements of Diatoms, 
638. 
Onion, Essential oil in tissue of, 209. 
Ontogeny of Insects, 180. 
Oogone of Vaucheria , 379. 
Oomycetes, Nucleus of, during Fecunda- 
tion, 632. 
Oosphere of Vaucheria, 379. 
Oospores formed by Union of Multi- 
nucleated Sexual Elements, 217. 
Ophioglossaceae, Stem of, 224. 
, Structure of, 500. 
Ophiurids, Ovary of, 352. 
O phthalmidium tumidulum, 574. 
Optic Nerves, Development of, 578. 
Optical Characters of Medulla ted and Non- 
medullated Nerve-Fibres, 325. 
Optics, Schroeder’s Photographic, 818. 
Orcadella , New Genus of Myxomycetes, 
384. 
Orchideae, Aerial Roots of, 215. 
Organic Acids in Succulent Plants, 208. 
Organisms, Preparation of Delicate, for the 
Microscope, 140. 
, Researches on Low, 756. 
Organs, Vegetable. See Contents, xxii. 
Orobanclie, Parasitism of, 69. 
Orobancheae, Pollination of, 769. 
Oscillariaceas, 233. 
