628 



INDEX. 



Plague, Transmission of, by Fleas. 295 

 I 'lunarians, Double, Studies on, 261 

 Planarians, Swiss Terrestrial, New, 454 

 Plankton, Adriatic, 184 



— Greifensee, 280 



— Lac des Settons, 279 



— Mansfield Lake, 533 



— Oceanic, 57 



— Richmond River, N.S.W., 562 

 - St. Vaast-la-Hogue, 367 



— Southern Alpine Lake, 344 



— Victoria Nyanza, 279 



— Diatoms, Two, 185 



Plant, M., Venetian Turpentine as a 



Cover-glass Cement, 316 

 Plant Diseases, 65, 197, 289, 568 

 Plant-hairs, Nitrogen-assimilation by, 361 

 Plant-lice, Jumping, of the New World, 



Monograph, 538 

 Plantago lanceolnta, 191 

 Plants, Higher, Mitochondrias of, 552 



— Hybrid, Rusts on, 193 



— Potato, Fungi occurring in, 196 



— Tropical, Diseases of, 195 



— Wealdian, from Peru, 466 



Plasma, Tadpole Epithelium cultivated 



in, 245 

 Plasmodia, Movements of, 52 

 Plasmodiophoraceae and tbek Relationship 



to the Mycetozoa and Chytridea?, 389 



— Cytology oi the, 195 

 Plasmodium vivax. Cultivation of, 308 

 Plastids, Transformation of Mitochondrias 



into, 552 

 Plastochondria in Dividing Ova of Ascaris 



megalocephala, 260 

 Plastosomes in Epithelial Cells of Trachea 



and Lungs, 342 



— Localization of, in Ascidian Ovum, 162 



— of Visual Cells, 159 



— What are they ? 437 



Plate, L., Two Ceylonese Tenmocephalidae, 



354 

 Plate, Boiler, Microstructure of, 91 

 Plates, Cracked Boiler, 91 



— Shell, for Heavy Boilers, Failures of, 



590 

 Platyhelminthes. See Contents 

 Playfair, G. I., Plankton of Richmond 



River, N.S.W., 562 

 Pleuragramma antarcticum. Development 



of Caudal Skeleton in, 340 

 Plumbridge, D., Alloys of Zinc, Tin, and 



Cadmium, 219 

 Pliimecke, O., Gonium pectorale, 371 

 Plumularids, Siboga, 264 

 Podosons, New, 380 

 Podurids, Oogenesis in, 42 

 Poeteren, N. van, Wintering of Mildews, 



375 

 Poison-glands of Snakes, 248 

 Polar Bodies in Antheridia of Riccio- 



carpus, 466 



Polyehaets, Nervous System of, 258 

 Polykrikos, Nematocysts of, 48 

 Polymorphism of certain Antarctic Dia- 

 toms, 563 



— - of Oranoderma lucidum, 287 

 Polyphemus, Development of Summer 



Eggs, 171 

 Polyporacese of Ohio. 380 

 Polyporus frondoms, Parasitism of, 286 



— squamosus, Culture of, 63 

 Polydigma rubrum, Development of, 376 

 Popovici-BazDOsanu, A., Study of Tricho- 



tarms ovinias, 42 

 Porella, Life-history of, 364 

 Pores, Femoral. 246 

 Porifera. See Contents 

 Porphyridium omentum, 282, 474 

 Portevin, A., Annealing after Quenching 



of Copper-tin and Copper-zinc Alloys, 



422 



— Microscopic Metallography in Three 



Dimensions, 322 

 Porthesia similis, Urticating Properties of, 



535 

 Potato Plants, Fungi occurring in, 196 

 Potts, F. A., Gall-forming Crab, 350 



— Thompsonia, 351 



Poulton, E. M., Verrucaria margacea, 388 

 Poyarkoff, E., Pupation of Holometabolic 



Insects, 448 

 Praxiola crispa, 281 

 Preen Gland, Structure of, 158 

 Preissia, Nuclear Division in, 183 

 Preservation of Bryozoa, 310 



— ot Hydroida, 211 



President, The, 95, 106, 323, 430, 431 



President's Address, 110 



Price S. R., Culture of Polyporus 



squamosus, 63 

 Pricolo, A., Blood Filaria of Camel, 45 



— Strougylus capillaris, 45 

 Printz, H, The Genus Oocystis, 281 



— Oocystis, 187 



Prior, E. M., Snap-beech Disease, 196 

 Proboscidian System in Nemertines, 356 

 Process, Pectineal, Development of, 436 

 Projection, Application of Direct Coolers 



to, 405 

 Propa<;'ules of Hepatics, 467 

 Protascus colorans, g. et sp. n., 373 

 Prothallus of Equisetum debile, 274 

 Protista, Fresh-water, Growth of certain, 



584 



— Nutritive Conditions Determining 



Growth of, 549 



— Soil, Growth of certain, 584 

 Protistan Parasite, Remarkable, 49 

 Protococcacese, New, 472 

 Protomyzortomum polynephri*, 352 

 Protophyte, Symmetrical, 468 

 Protoplasm, Excitability of, 437 



— Transformations of, 437 

 Protostigmata in Ascidians, 162 



