646 



INDEX. 



Petersen, J. B., Cultivatiou of Green 

 Algae, Sil 



— Danish ^rophilous Algae, 409 

 Pethvbridse. G.. Verticillium Disease of 



the Potato, 588 

 Petrie, Profess. >r F., 250 

 Pfeifl'er, X. E., Prothallia of Ophioglossutn 



rulgatum. 484 

 Phagocyte Organs of Scorpion, 409 

 Phagocytosis in Urine, 372 

 Pi.allostc'thida), Structure of, 46i) 

 I'harynx, Human, Derivatives of, 2s0 

 Philosamia, Colour of Cocoons in, 553 

 Pboma Disease of Lavender, 496 

 Phosphorus in Cast-iron, 119 

 Photography of Coloured Objects, GOl 

 Photomicrograpliy, Elementary, Bag- 



sliaw's, IIB 



— Plain, Practical I'rinciples of, 334 

 Phycomycetes, British, 411 

 Phylloglossum, Morphology of, 399 

 Phyllopoda conchostraca, Monograph on, 



195 

 Pliylogeny, Par8site's,'Eelations of, to that 



of Host. 373 

 Phytoplankton. Antarctic, 401 



— from ( 'elebus, 404 

 Phytophthora infedans, 492 

 Picro-nigrosin, 2(»7 



Piersol. W. H., Egg-laying of Plethodon 



cinereus, 59 

 Pieters, A. J., Achlva and Saprolegnia, 



219 



— The Ferax Group of Saprolegnia, 101 

 Pig Embryo, Yolk-sac of, 453 



— Tuberculosis in. 228 

 Pigments of Fruits of Capsicum, 88 

 Pinnularia. 580 



Pinus, •' Sanio's Bars " in, 570 

 Piper, Anatomy of, 570 

 Pituitary J^xtract and Ovarian Activity, 

 368 



— Feeding, Influence of, on Growtli, 452 

 Influence of, on Sexual Development, 



452 



— Substance, Eflecflof, on Egg-production 



and Growth, 540 

 Pixell-Goodrich, H. L. M., Gregarines of 

 Glycera, 394 



— Minchinia : a Haplosporidian, 308 



— Pyorrhoea, 513 

 Placenta of Macacus, 58 



Plague, Sero-diagnosis of, by Means of 



Ascoli's Precipitation Method. 229 

 Plankton, Marine, 98 



— of the Lietzensee, 97 

 Plankton-epibiontae, 316 

 Plant Histology, IMethods in, 89 

 Plantefoil, L., Crocysporium, 412 

 Plants, Diseases of, 106, 224, 415, 495 



caused by Fungi, 326 



Plasmodia of BwUiamia utricularis, Culti- 

 vation of, 235 



Plating Dishes for the Cultivation of 



Bacteria, 342 

 Piatt. E. L., Blanket-algse of Fresh-water 



Pools, 317 



— Fresh-w-ater Algae, 579 

 Platycerium, Genus, 485 



Playfair, G. I., Fresh-water Algae of New 

 ■ South Wales, 317 



Pleomorphism in Typhus and other 

 Diseases, Studies in. 528 



Plethodon cinereus. Egg-laying of. 59 



Plowman, A. B., Comparative Anatomy of 

 Box Elder (Negundo), 397 



Plumbiigella, Embryo-sac of, 90 

 'Plum- weevil, Ichneumonid Parasite of, 

 551 



Pneumocystis carnii in Mice in England, 

 307 



Podomitrium, 212 



Podosporiella Disease of Germinating 

 Wheat, 221 



Poison Glands of Centipedes, 381 



Poisoning, Fatal cases of, 108 



I'oison-organ ot Sting-ray, 542 



Pollacci, G., Coniothyrium idrinum Shel- 

 don, 584 



— Study of Citromyces, 584 

 Pollen-formation in ^Monocotyledons, 208 

 Polychaet Parasite, Kemarkable, 385 

 Polychaets, Australian. 71 

 Polycirrus. New Species of, 385 

 Polyemliryonic Development, 549 

 Polymorphism in Insects, 375 



Polyp, Change of Symmetry in, 390 

 Polypodiacfse, Branched Prothallia in. 574 

 Polypodium Species of Tropical America, 



486 

 Poiyporaceas, Studies in, 494 

 Polyporus, Genus, 325 

 Polyzoa. Cretaceous, Cribiform, 562 



— Fresh-water, Statohlasts of, 141 



— of Cliilka Lake, 71 



— of ' Siboga ' Expedition, 70 



— Plivlactolajmatous, from Volga Region, 



475 

 Pomace-flv, Experiments with, 293 

 Pond-life,"List of Exhibits. 360 

 Small. Slide for Examining, 611 



— weed Holder, New, 534 



Parcel I io scaler. Orientation to Liglit in, 



557 

 Porifera. See Contents 

 Porter, A., Herpetomonads in Mice, 86 



— Pneumoci/stis carnii in Mice in Eng- 



land, 307 

 Porteviu, A., Ball-test on Cast Metals and 

 Alloys, 350 



— Persistent Brittleness in Steel, 434 

 Potato, Sweet, Soilstain of, 327 

 Potato-beetle, Concealment of Eggs of, 



295 

 Potato-wilt caused by Fusarium eumartii, 

 587 



