30 
INDEX. 
Nitrates, Reduction of, 414 
Nitre-Fungi, 236 
Nitric Acid, Microcliemical Reaction for, 
253 
Nitrification, 145 
Nitrogen, Atmospheric, Fixation by Algae 
and Bacteria, 54 
— Free, Fixation of, by Bacilli of Root- 
Tubercles, 158 
— Influence on Formation of Roots, 142 
Nitroso-Bacterium with New Growth- 
Form, 429 
Nobbe, F., Inoculation of Nodule-Bacteria 
in different Host-Species, 237 
— Root-Tubercle Bacteria, 53 
Nolf, Pierre, Uterine Mucosa of Bat during 
Gestation, 360 
Nomenclature, 274 
Non-Nucleated Cells, 134 
Method of Staiuing, 175 
Nordstedt’s Index of Desmids, 227 
Norton, J. B. S., Parasitic Fungi, 230, 
566 
Nose-piece, 180 
Nostocacese. 64 
Nostrils, Development of, in Mammals, 19 
Notochord Tissue, Intercellular Connec- 
tions in, 522 
Notommata wernecki, 41 
Nourishment, Organic, of Green Plants, 
218 
Nucellus, Phanerogams with Ovule desti- 
tute of, 216 
Nuclear Degeneration and Renewal, 363 
— Division, Amitotic, in Egg of Hedge- 
hog, 17 
Observing, in Equisetum and Chara, 
445 
in Pollen-Grains, Fixiug, Imbedding, 
and Staiuing, 445 
Nuclei, Epidermic, of Anguillulida3, 387 
— Structure of, in Spinning Glands of 
Caterpillars, 119 
Nucleolar Structures, Differentiating, 83 
Nucleoli, Combined, 36 
Nucleus, Behaviour of, in Development of 
Fructification of Ascomycetes, 58 
— Division of, in Chara, 416 
— Influence of, on Formation of Cell- 
Wall, 302, 544 
— of Protozoa, 44 
— Respiratory Function of, 47 
Nusbaum, J., Heart-Body of Enchytraeidse, 
287 
— Peripheral Nervous System in Crayfish, 
532 
Nussbaum, M., Egg-laying in liana fusca, 
189 
— Revivification of Infusoria, 542 
Nutrient Agar, Rapid and easy Method 
for Preparing, 341 
— Media, Influence of, on the Develop- 
ment of Fungi, 563 
Nutrition of Phanerogams. See Contents, 
xxii 
Nutritive Medium for Algae, 247 
Nuttall, G. H. F., Dissemination of Plague 
Bacilli by Insects, 577 
Nyman, E., (Edipodium, 224 
Nymphacaeaceae, Fibro vascular Bundles, 
136 
O. 
Oak-Galls, Mimicry in, 530 
Objective, New, 70 
— See Contents, xxx 
Ochrobryum, 315 
Ocular-Dichroiscope, 245 
Odonate Nymph from a Hot Spring, 280 
QEdema in Roots of Salix, 552 
(Edipodium, 224 
CEnothereae and Halorageae, Anatomy of, 
403 
(Estrus, Life-History of Larvae, 32 
Offensive Liquids, Ejection of, by Insects, 
282 
Ogata, M., Plague Bacillus, 426 
Ohlin, Axel, Development of Teeth in 
Bottle-nose Whale, 518 
Oidium, in Pseudo-lupus vulgaris, 322 
Oil in Leaves, 303 
Olfactory Setae of Cladocera, 286 
Oligochaeta, New, 287 
— North-American, 125, 287 
— of South America, 125 
Olson, M. E., Parasitic Fungus, 420 
Oltmanns, F., Conjugation of Swarm- 
spores, 418 
— Positive and Negative Heliotropism, 221 
Ombrophoby of Flowers, 412 
Onagraceae, Anatomy, 137 
Ontogeny and Phylogeuy, 273 
Oogenesis in Anura, 189 
— in Mouse, 17 
— in Pholcus, 283 
— of Ascaris, Chromatin Reduction in, 535 
Oophyte of Botrychium, 415 
Opening of the Flower of CEnothera, 215 
Ophiuridae, Deep - Water, from Indian 
Ocean, 296 
Ophiuroids, Palaeozoic, 211 
Ophryocotyle, Species of, 292 
Opisthoparia, 205 
Optic Lobes of Bee’s Brain, 280 
Optics, Microscopical. See Contents, xxxi 
Orcein Staining, 449 
Organs of Phanerogamia. See Contents, 
xx 
Origin of European Fauna, 523 
Orthoptera, Classification of, 281 
Ortmann, A. E., ‘ Bipolarity ’ in Distribu- 
tion of Marine Animals, 24 
— Distribution of Marine Organisms, 276 
— Natural Selection and Separation, 113 
— Trapeziidse, 285 
