780 



INDEX. 



Photochemical Methods of Staining Muci- 

 laginous Plants, 134 

 Photomicrograph] c and Projection Appara- 

 tus, Exhibition of, 267 



— Apparatus, Guide, 123 

 New, 121 



— — Reichert's Small, 122 



— Notes, 388 



— Stand, Zeiss', 3S1 

 Photomicrography. See Contents, xxxv 



— Demonstration by Dr. Spitta, 141 



— - Drawing and Projection, Reichert's 

 New Combined Apparatus, 122 



— Instantaneous, Scott's Apparatus, 720 

 Phreatoicoides g. n., 460 

 Phyllactinia, 94, 494 



Phylloclades, 345 



Phyllotaxis, Alteration of, in Ascending 

 Shoots, 346 



— of Impatient glanduligera, 481 



— Theory, 481 



Phylogeny and Cell-Cleavage, 439 



Physcia pulverulenta, Development of the 

 Apothece, 236 



Physiology of Phanerogams. See Con- 

 tents, xxiv 



Phytoptus, Histological Changes produced 

 by, 77 



Pickels, F. W., Accessory Bladders of 

 Turtles, 185 



Picrocarmin, Neutral, Method for Pre- 

 paring, 731 



Fieri, J.B., Ovulase, 173 



Piersig, R., Completion of Monograph on 

 Hydrachnids, 47 



— Species in Hydrachnida, 460 

 Pigment-forming Bacillus, New, 622 

 Pigment, New, Kreso-fuchsin, 647 



— New Sponge, 472 



Pigments, Bacterial and Fungus, 647 



— of Amanita muscaria, 367 



Pilsbry, H. A., Relations of Land Mollus- 

 can Fauna of South America, 191 



Pintner, Head-glands of Tetrarhynchus, 

 205 



Piorkowski, — ., Apparatus for Ascertain- 

 ing the Effect of Disinfectants, 650 



Piorkowski's Medium for Diagnosing Ty- 

 phoid Bacilli, 639 



Piptocephalis, New Mode of Formation of 

 the Oosperm, 234 



Pirotta, R., Energids and Cells, 475 



— Fertilisation of Cynomorium, 691 

 Pisum sativum. Artificial Crossing, 6'J2 

 Placenta of Angiospcrms, 345 



— of Galago aghymbanus, 299 



— of Macacus, 560 

 Placenticeras, Development, 665 

 Plague Bacilli, Filament formation, 710 



— Vaccine, Preparation, 261 

 Plaice, Natural History, 663 

 Planarians, Development, 61 



— Heteromorphosis, 676 



Planarians, New, 466, 586 



— Regeneration, 465 



Planchon, L., Effect of Chemical Media on 



the Growth of Dematiese, 496 

 Plankton Algse, 612 



— Lake, 313, 594 



— of Fresh-water Lakes, 313 



— of Gulf of Naples, 594 



— of Lake Leman, 34 



— of Mammoth Cave, 665 



— River, 314 



— Swiss, 313 



— of the Elbe, 664 



— Tropical and more Northerly, 313 



— Variation, 312 

 Plant-lice, Life-history, 577 



" Plantation " Microscope, C. Baker's, 511 

 Plasmodiophora Brassicse, 239 

 Plasmolysis of Growing Cells, 74 

 Plasmosomes, 179 



Plateau, F., Choice of Colours by Insects, 

 319 



— Vision of Anthidium manicatum, 319 

 Plato, — ., Staining Gonococci in Living 



Leucocytes, 400 

 Platydorina, a New Genus of Volvocinea;, 



362 

 Platyhelminthes. See Contents, xviii 



— Classification, 329 

 Plectanocotyle, New Species, 60 



Plehn, A., Staining Karyochromatophilous 



Granules in Blood, 525 

 Plehn, Marianne. Polyclads of the Pacific 



Expedition, 63 

 Pleomorphic Bacterium, New, 242 

 Pleurococcus and Pseudo - Pleurococcus, 



240 

 Pleurosigma Image, 256 

 Pleurotomaria, Anatomy, 190 

 Pleurotus olearius, Poisonous Property, 



367 

 Plossl Microscope, 269 

 Plumularidse, Neinatophores, 590 

 Plumules of Lycsena, 578 

 Plutei from Unfertilised Eggs, 64 

 Pncumaticity of Mammalian Skull, 32, 573 

 Pneumobacillus, Friedlaender's, and 

 Bacillus aerogenes lactis, Identity of, 

 504 



— Identity with Bacillus mucosus ozsenx, 



504 

 Podwyssotzki, W., Myxomycetes as the 



Exciting Cause of Tumours in Animals, 



239 

 Pokrowsski, M., Apparatus for rapidly 



Dehydrating Pieces of Tissue, 519 

 Polacci, G., Formaldehyde in Plants, 343 

 Polak, J. M., Staminodes of Scrophula- 



riacea?, 601 

 Polar Bodies in Urodela, 16 

 Polarised Light without Iceland Spar, 719 

 Polarising Eye-piece, Improved, and a 



New Projection Eye-piece, 537 



