INDEX, 
727 
Pic, Maurice, Myrmecophilous Coleoptera, 
192 
Picro-formalin in Cytological Technique, 
492 
Pictet, Arnold, Growth of Butterflies’ 
Wings, 421 
— Metamorphosis of Caterpillars, 535 
Picton, L. J., Heart-body and Ccelomic 
Fluid in Polycliaeta, 540 
Tieri, J. B., Experiments on Bivalves, 
68 
I’iersig, R., German Hydraclmidse, 75, 194, 
422 
Pigment, Removal from Zoological Speci- 
mens, 682 
Pigment-forming Saprophyte, New, 115 
Pigments, Bacteria with Assimilatory, 
115 
— for Depicting Microscopical Prepara- 
tions, Preparation of, 241 
— Nitrogenous, of Fungi, 329 
— of Muscle and Ovary in the Salmon, 
526 
— of Tardigrades, 75 
Pilidiocystis, 334 
Pilularia, Leaf and Sporocarp, 652 
Pinnock, E., Two very Simple Microtomes, 
378 
Pinus, Fertilisation, 644 
Fionodesmotes Fliormasorme, 423 
Pirotta, R., Multinucleated Vascular Ele- 
ments in the Dioscoreaceae, 437 
— Origin of Vascular Elements in the 
Growing Point of the Root of Mono- 
cotyledons, 439 
Pissarew, W. J., Heart of Hive-Bee, 421 
Pitcher-Plant and Spider, 538 
Pitcher-Plants, 95 
l’itfield, R. L., Streptococcus sanguinis 
canis , 229 
Pits in Cyatheaceae and Marattiacese, 
450 
Pizon, Antoine, Classification of Molgu- 
lidse, 529 
— Development of Double Larva of Diplo- 
somidao, 415 
Placentation ofPerameles, 180 
Plague Bacillus, Observations on, and 
Experiments with, 341 
— Relation of Insects and Rats to the 
Spread of, 117 
— Serum, Production, 485 
Planar Lens, Remarks on the Construc- 
tion of, and its use in Low-power Photo- 
micrography, 399 
Planarians, New, 429 
Plankton Algae of the Freshwater Lakes 
of Norway, 455 
— Gathering, 128 
— Method, Sources of Error in, 247, 294 
— Nocturnal, of the Lake of Geneva, 
618 
— of Norwegian Lakes, 618 
Plankton of Ponds, Researches on, 306 
— of Puget Sound, 528 
— of Rivers, 528 
— of the Red Sea, 618 
— Organisms, Method for Preparing, 485 
Plankton-Forms, New, 334 
“ Planktonsucher,” 678 
Plant-Egg, Orientation, 555 
Plasmolysis and the Protoplasmic Mem- 
brane, 637 
Plate, L., Alimentary Tract of Chelone, 
408 
— Are there Septibranchiate Bivalves ? 
417 
— Degenerative and Regenerative Pro- 
cesses in Breathing Tubes of Janel- 
lidse, 297 
— Petromyzont with Large Eyes, 413 
Plate, L. II., Chitonidae, 298 
— Structure and Classification of Janel- 
lidae, 531 
Plateau, F., How Flowers attract Insects, 
191 
Platt, Julia B., Development of Cranial 
Region in Necturus, 52 
Platygaster, Development of, 73 
Platyhelminthes. See Contents, xxxii 
Plecoptera, Studies on, 301 
Plessis, G. du, Swiss Turbellaria, 80 
Pleural Cavities and Pleuro-Pericardial 
Membranes, 54 
Pleurococcus, Culture, 485 
Pleurotomaria, Structure, 532 
Plowright, C. B., Calcium Oxalate in Fun- 
gi, 657 
Pneumococcus and Streptococcus, Aberrant 
Growth-forms, 664 
— Capsule, 666 
Pneumonia, Contagious, of Guinea Pigs, 
665 
Pocock, R. I., Spider and Pitcher-Plant, 
538 
Podaxinese, 332 
Podbelsky, — ., Sporicidal Action of Nor- 
mal Rabbit Serum, 581 
Poecilogony in Alplieus minor , 538 
Poisons, Effect of, on Cortical Nerve-Cells, 
288 
Polacci, G., Parasitic Fungi, 110 
Polar Bodies and Germinal Vesicle in 
Urodela, 516 
Some Activities of, 182 
Polarisation Apparatus, Novelties in, 233 
Pollen, Biology and Morphology, 319 
— Composition, 643 
— of Asclepias, 94 
Pollen-Grains and Antipodal Cells, 99 
Germination of, 214 
Pollen mother-cells, Nuclear Division in, 
90 
Pollock, J. B., Curvature of Roots, 102 
Polychaeta of French Coast, 305 
— Larvae, Pelagic, 305 
