INDEX. 7 55 
Nitrogen, Free, Absorption by Plants, 198 
— — Atmospheric, Assimilation by Mi- 
crobes, 070 
Nitrous Acid, Colour Reaction on Cultiva- 
tions of Cholera and other Bacteria, 596 
Noacli, — ., Cysticercus inermis in Cattle, 
432 
Nobbe, F., Absorption of Free Nitrogen by 
Plants, 198 
— Microbe of Tubercles of Leguminosae, 
215 
— Parasitic Fungi, 83 
Nodes, Geotropic Curvature, 454 
Nodules, Fossil Sponges of Flint, 643 
Noldeke, B., Metamorphosis of Freshwater 
Sponge, 60 
Noll, F., Anomalous Production of T<n- 
dril, 547 
— Exotropism of Root-system, 198 
— Influence of Phosphates on the Growth 
of Plants, 656 
— Morphology of Cone of Abietinese, 193 
Nordmann, F., Formation of Decidua, 152 
Notochord, Anterior Extremity in Higher 
Vertebrates, 31 
Notothylas, 202 
Notter, L., Relation between Conditions 
of Soil and Prevalence of Epidemic and 
Endemic Diseases, 680 
Novy, F. G., Apparatus for Cultivating 
Anaerobes, 114 
— Directions for Laboratory Work in Bac- 
teriology, 484 
— New Bacillus of Malignant (Edema, 91 
Nuclear Division, First, in Pollen-Mother- 
Cells of Lilium marfagon, 283 
in Anthers of Lilium, 329 
— — in Benedenia, 326 
Multiple, 613 
— Divisions in Animals and Plants, He- 
terotype, 612 
— Structure and Division, 294 
— Structures, Influence of Osmic Acid on 
Preservation, 608 
— Substance in Early Stages of Develop- 
ment of Cyclops, Independence of Pa- 
ternal and Maternal, 631 
Nuclei in Cells of Larval Salamander, Ac- 
cessory, 613 
Nucleolus of Lobster, Action of Gravity, 
173 
Nucleus, Chromatophily, 648 
— Division, 329 
in Valonia, 206 
— in Benedenia, 326 
— in Spimchona, 644 
— of Diatoms, 86 
— Yolk-, in Eggs of Lumbricits , 633 
of Lumbrirus, Staining, 703 
Nudibranchs, Hedjlidm, a new Family of, 
301 
Nusbaum, J., Enchytraeidse, 532 
— Hertwig’s Theory of Development, 412 
Nutrition of Phanerogams. See Con- 
tents, xx ii 
Nyctotherus ovalis, Anatomy, 404, 499 
Nymphaeaceae, Morphology, 70 
Nypels, P., Sexual Organs of Uredinese, 
464 
O. 
Object-carrier, Differential, 101 
finder, New, 587 
Objectives, Auxiliary Apparatus for Ad- 
justment with Immersion, 585 
— Compensation of Error, 689 
— See Contents, xxx 
O’Brien, M., Proteiels of Wheat, 544 
Oculomotor, Development, 507 
Oxypoda ceratophtli'dma, Sound produced 
j by, 52 
j Odorific Apparatus of Heteropterous Hemi- 
ptera, 524 
(Edema, New Bacillus of Malignant, 91 
Oemler, — ., Mallein and Bacillus of 
Glanders, 353 
(Eningen, Miocene Insect Fauna of, 420 
Ohlmacher, A. P., Formalin as Mordant, 
703 
— Suggestions on Bacteriological Tech- 
nique, (94 
CEstrus in Man, 181 
Oidium albicans, 559 
— lactis, 85 
Oil-bodies of Hepaticae, 458 
I bottle, New, 608 
— in Histological Technique, Anise, 247 
Oka, A., Barenthsia misalaensis, 419 
— Nephridium of Endoproctous Polyzoa, 
419 
of Phvlactolaematous Polyzoa, 303, 
I 379 J 
— Structure of Clepsine, 56 
Oleaginous Seeds, Germination, 75, 551 
Olfactory Organ of Torpedo, Development, 
I ? 3 
I Oligochseta, Comparative Anatomy, 54 
— from Illinois, New, 179 
— of Pacific Coast of California, 427 
j Oltmanns, F., Development of Sexual 
Organs of Vaucheria, 554 
— Opening and Closing of Flowers, 447 
— Parasitic Sea- weeds, 340 
j Ombrophilous and Ombrophobous Vegeta- 
tion, 194 
Omentum of Rabbit, Development of 
Vessels and Blood in Great, 408 
| Oncholaimvs, Tubular Organ, 57 
Ontogeny, Sedgwick’s Theory of the Em- 
bryonic Phaso of, as an aid to Phylo- 
genetic Theory, 407 
| Oocytes of Salamander, Peculiar Mitosis 
in young, 511 
| Oogenesis in Rabbit, 31 
! Ophidia, Haematozoa of, 441 
3 d 2 
