672 



INDEX. 



Opliioglossum, Protocorni of, 298 

 Ophiuroid, Interesting New. 586 

 Optical Demonstrations, Kriiss Apparatus 

 fur, 207 



— Indicatrix in Petrographic Microscope 



Work, 212 



— ^Methods, Application of, to Technical 



Problems of Stress Distribution, 325 

 Organ of Jacobson in Foetal Cat, 152 

 Orthoptera, Spermatozoa of, 385 

 Osawa, G., Intertubular Cell-mass of the 



Pancreas 380 

 OscillariesB, Change of Colour in, 505 

 Osseous Medulla, Deposition of Pigment 



in Endothelium of Capillaries in, 572 

 Ostenfeld, C. H., Danish Plankton, 504 



— Revision of Chsetoceras, 183 

 Osteoblasts and Osteoclasts, 153 

 Osteoclasts, Osteoblasts and, 153 

 Osterwalder, A., Wine Bacteria, 196 



Ova and Vitelline Cells in Entomostraca, 

 386 



— Ascaris, Preparation of, 216 



— Attachment of, in Kurtus gulliveri, 382 



— Fertilized, Efiect of Hypertonic Solu- 



tions on, 165 

 Ovaries, Mammalian, Demonstrating 



Nerves in, 431 

 Ovarj', Action of Eontgen Rays on, 62 



— Corpus luteum and Interstitial Gland 



of, 57 

 Oviduct of Hen, Minute Structure, 281 



— Senile Involution of the Oviduct, 154 

 Oviposition in Ichneumon Flies, 385 

 Ovipositor, Structure of, in Dytiscidse, 481 

 Ovum, Human, Implantation of, 57 



— of Ciona, Organ-forming Substances in, 



477 



Ox, Development of Gland of Third Eye- 

 lid in, 279 



Oxyures of Uromastix, 69 



Pancreas Cells, Chrondriome of, 280 



— Intertubular Cell-mass of, 380 

 Pantocsek, J., Hungarian Diatoms, 505 

 Paraffin as Source of Energy, 423 



— Blocks, Marking, 535 



— Preparation of, for Embedding Purposes, 



634 

 Paraffin-embedding, Dehydration and, 634 

 Paraffin-oil for Mounting Microscopical 



Preparations, 636 

 Paralineus eliaahethse, 69 

 Parallohiopsis coutieri, 392 

 Paramcebse, Studies on, 166 

 Paramcecium, Bi-parental Inheritance in, 



390 



— Effect of Conjugation in, 389 

 Parasites and Pearls, 490 



— Animal, Ingestion of Bacteria by, 95 



Parasites, Intestinal, of Tadpoles, 392 



— of Fishes, 497 



Para spores of Ceramiacese, 604 



Paratyphoid-enteritidis Group, Selective 

 Medium for, 631 



Parietal-cells in Gonads of Ascaris megalo- 

 cephala, 68 



Parravano, N , Ternary Alloys of Iron- 

 nickel-raanganese. Nickel-manganese- 

 copper, and Iron-manganese-copper, 

 435 



Parshley. H. M., Sex-determination in 

 Cattle. 472 



Parthenocarpic Fruits, Seed-development 

 in, 395 



Parthenogenesis in a Dipterous Insect, 385 



Pascher, A., Fresh-water Algse of Middle 

 Europe, 601 



— Microflora, 303 



Pathogenic Bacteria, Isolation of, from 



Stools, 424 

 ■pathology. Plant, General Study of, 312 

 Patzelt, v., Minute Structure of Adrenals 



of the Frog, 154 

 Paulson, R., Report on the Lichens of 



Epping Forest, 612 

 Pavillard, J., Observations on Diatoms, 



402 



— Periodicity of Plankton in the Western 



Mediterranean, 601 

 Pawlowsky, E., Poison-gland of Scorpions, 

 289 



— Structure of Poison-gland of Scolopen- 



dra morsitans, 482 

 Pearl, R., Sex-determination in Cattle, 



472 

 Pearlite, Granular, 541 

 Pearls, Parasites and, 490 

 Pecten, Experimental Metaplasmia in, 286 

 Pectinatella magnifica, Variations in Hooks 



of Statoblasts in, 387 

 Pelourde, F., Fsaroniu>< hrasiliensis, 175 

 Peltigera lepidoplwra. Scales of, 411 

 Penard, E., False Conjugation of Diatoms, 



182 

 Penguin's Gall-bladder, Fluke from, 293 

 Penieillium, Coremium-formation in, 188 



— Petchii, 607 



— Resistance of, to Toxic Substances, 191 



— Study of, 309 

 Peranema, Reactions of, 167 



Perard, C, Metahacterium polyspora, 519 

 Pereival, A S., Resolving Power of the 



Microscope, 213 

 Periderm of Fossil Lycopods, 500 

 Peridiuieae resembling Flagellates and 



Algse, 180 

 Peri-oesophageal Organ, Enigmatical, in 



TineidsB, 384 

 Periopthalmus, Eyes of, 283 

 Peripatus, American Species, 288 

 Peristome in Ceratodon purpureus, 398 

 Peristomial Cilia, 72 



