768 



INDEX. 



Plague, 98 



— .Etiology, 451 



— ami Yellow Fever, Relations of the Coli 



Bacillus to, 78 



— Bacilli, Structural Division of the Endo- 



plasm, 7S 



— Bacillus, Morphology ami Transmission 



of the Bacterium by Fleas of Mice 



and Rats, 199 



Vitality, 319 



Planaria metadata, Reproductive Organs, 



537 

 Planarians, Australian Land, 537 



— Tasmanian Land, 537 

 Plaukton Algae, 67 



— of Gulf of Trieste, 266 



— of West Coast of Norway, 410 



— Red Sea, 267 



— Southern, 2€6 



— Tropical, 154 



— Winter, of Larger and Smaller Lakes, 



307 

 Planorbis, Variations, 520 

 Plant Histology, Methods, 60 i 

 PJate, L. H.. Anatomy and Phylogeny of 

 Cliitonida?, 522 



— Chitonicium simplex, 547 



Plateau, F., Constancy of Insects in their 

 Visits to Flowers, 412 



Plating, Value of, as a means of Deter- 

 mining the number of Bacteria in 

 Drinking Water, 468 



Platyhelminthes. See Contents, xvii 



Plelin, M., Minute Structure of Gills in 

 Teleosteans, 637 



rienge, H., Fixing Fiagellata, 590 



— Method tor Examining quickly Moving 



M.cro-organi.sms, 97 

 Pleuroascus g. n. 68:) 

 Pleuro branch idea, Monograph, 271 

 Pleurocope g. n., 645 

 rieurutomaria beyrichi, 270, 411 

 Plistophora mulleri, 2S6 

 Plottuer, T., New Genus cf Fungi, 190 

 Plumularidas, 282 



Pneumaticity of Skull in Mammals, 22 

 Pneumatophores, 552 

 Pocket Microscope, 103 

 Pocock, R. I., Adaptation of Instinct in a 



Trap-door Spider, 276 



— Palmophonus hunteri, 275 

 Podocotyle, 42 

 Poecilandry, Periodic, 412 

 Poison of Parasites, 420 



— Scolopendra mnrsitans, 34 



— Volatile, of lulus terrestris, 33 

 Pokrowski, — ., Imbedding in Celloidin, 



213 

 Polarised Light Effects, Imitation by Dif- 

 fraction, 87 



for Investigating Nerve-Fibres, 603 



Folariser and Condenser combined for 



Petrographical Microscopes, 329 



Polarising Microscope,Weinschenk's G uide 



to the Use of, 705 

 Polarity and Regeneration of Bryopsis, 1S8 



— in Egg of Sea-urchin, 423 



— of Oocyte, Ovum, and Larva of Strongylo- 



centmtus lividus, 540 

 Poljakoff, P., Maturation and Fertilisation, 



135 

 Poljanec, L., External Sexual Organs in 



Male Lepidoptera, 525 

 Pollacci, G., Parasitic Fungus, 444 



— Photosynthesis, ISO 



Pollen, Foreign, Protection against the 



Germination of, 435 

 Pollen-grains, Influence of the Number on 



Fertilisation, 176 

 Pollen - mother -cells of Lilium longi- 



florum, Centrosomes, 656 

 Pollen-tube, Endotropic Course, 664 



of Pinus, 664 



Pollen-tubes and Archegones in Seouoia, 



57 

 Polycelis comuta, Influence of Temperature 



on Reproduction, 157 

 Polychaete, Fresh- water, 156 

 Polvehsetes of the Clyde, Notes, 156 



— Study of English Channel, 38 

 Polycistid Gregariues, Development, G55 

 Polycystin, 312 



Polyembryony, 298 



Polyphagus Euglenx, Reproduction, 189 



Polypompholyx and Byblis, 552 



Polysiphonia, Tetrasporauge, 563 



Polytoma, Cell-division, 545 



Polyzoa, Structure, 651 



Polzeniusz, F., Intramolecular Repiration 

 and Production of Alcohol by Seeds 

 placed in Water, 671 



Pontoparta g. n., 646 



Popta, C. M. L., Appendages of Branchial 

 Arches in Fishes, 517 



Pores and Chambers in Cell-wall of Dia- 

 toms, 306, 563 



Porifera. See Contents, xix 



Portable Microscope made of Magualium, 

 723 



Post-Larval Changes in Veitebral Articula- 

 tions in Salamanders, 137 



Potamogeton, Ovule and Embryo, 664 



Potamoplankton of the Volga, 144 



Potassium Salts, Sensitiveness of Plants to 

 small amounts, 556 



Potato, Bacterial Disease of, 6S9 



— Grafting on Potato, 436 



— Tubercnlisation of, 298 



Potter, M. C, Bacterial Disease of the 



Turnip, 317 

 Pound, R., Sterigmatocyxtis Candida, 684 

 Powell, Hugh, Microscope made by, 728 

 Powell and Lealand, Microscope dated 



1848, 727 

 Power, F. B., Bark of Robinia Pseuda- 



cacia, 060 



