1156 



INDEX. 



Plasmodia, Apparatus for Cultivating, 

 1057. 



I'lasinolytio Studies of the Membrane 



of Vacuoles, <537. 

 Plate, L., Ectoparasites of the Gills of 



Gammarus pules, 771. 

 , Natural History of Rotifers, 76. 



, Preparing Rotatoria, 1074. 



Plateau, F., Palps of Maudibulate 

 Insects, 595. 



, Vision of Insects, 58. 



Platinum Wire, Fine, and Thin Gold 

 Leaves, 336. 



Platner, G., Accessory Nuclear Body, 

 216. 



, Development of the Reproductive 



Elements in Pulmonata, -110. 



, Fertilization in Arion, 773. 



, Spermatogenesis in Pulmonata, 



50. 



Plaut, H., Oidium albicans, 300. 



Plessis, G., Fresh-water Monotidse, 449. 



Pleurosigma angulatum, Dotted Ap- 

 pearance on, 691. 



, Interpretation of the Six 



Spectra of, 694. 



Plossl's Electric Projection Microscope, 

 502. 



Pneumonia-cocci, Staining, 712. 



Fneumococcus of the Horse, 668. 



Pocta, P., Siliceous Sponge-spicules 

 from the Chalk, 258. 



, Sponge-spicules from the Horn- 

 stone of Briisan, 25S. 



Pohl-Pincus, J., Polarized Light as a 

 means of recognizing Irritable Con- 

 ditions of the Nerves of the Scalp, 

 724. 



Poirier, J., Excretory and Nervous 

 System of Duthiersia and Soleno- 

 phorus, 795. 



Poison of the Edible Mussel, 587. 



Poison-apparatus, New Echinothurid 

 and its, 451. 



Poisonous Properties of the Morel, 293. 



Peilarization of Bi-axial Crystal Plates 

 cut vertically to an Optic Axis, 726. 



phenomena of Tissues, 285. 



Polarized Light as a means of recog- 

 nizing Irritable Conditions of the 

 Nerves of the Scalp, 724. 



, Convergent Use of the Mi- 

 croscope with, 513. 



Polarizing Apparatus, Amici, 682. 



— — Prism, Ahrens', 859. 



, New, 397. 



Poletajewa, Olga, Heart of Insects, 424. 



Polian Vesicles of Asterida, Functions 

 of, 802. 



Polishing and Grinding hard Objects, 

 Horizontal Lathe for, 714. 



Pollen, &c, Mounting, 908. 



Pollen, Composition of, 97. 



of Pinus sylvestris, Composition 



of the Ash of, 648. 



of the Pine, Composition of, 648. 



Pollen-grains and Fungus-spores, Ger- 

 minating, :; 12. 



, Cultivation of, 342. 



tubes, 27o. 



, Fertilization by, 649. 



Pollination, Hybrid, 279. 

 l'olvchata, 'Challenger,' (H4. 



of Dinard, 246. 



Polyclinse, 956. 



Polymorphism of the Mypocreaceae, 833. 

 Polyparium ambulans, 627. 

 Polyporus annosus and Trametes 



radiciperda, 298. 

 Schweinilzii as a Parasitic Fungus, 



115. 

 Polystigma fulvum, a new Almond 



Disease, 835. 

 Polyzoa. See Coutents, xii. 

 Pond-life, &c, Hardy's Examining 



Tank for, 139. 

 Organisms and Kotifera, Natural 



Preservation of, 868. 

 Pontobdella. Genital System of, 443. 



muricata, Genital Organs of, 618. 



Poplar, White, Fall of Branches of, 823. 

 Pore- capsules, Mechanism for the 



Opening of, 472. 

 Pores, Dorsal, of Terricolous Oligo- 



chajta, 244. 

 Porifera. See Contents, xix. 

 Port Phillip Heads, Sponges from, 1001. 

 Portele, K., Sour-rot of Grapes, 115. 

 Post, Transmitting Sections by, 723. 

 Post-embryonal Development of Trema- 



toda, 249. 

 -embryonic Development of Na- 



jades, 222. 

 Potassium, Physiological Action of the 



Salts of, 221. 

 Potato, Growth of Shoots of, when the 



Eoots are removed, 476. 



, Preparing, 732. 



, Starch-grains in, 346. 



Potts, E., Fresh-water Sponges from 



Mexico, 82. 

 Pouchet, G., Balanoglossus samiensis, 



252. 



, Peridinese, 261. 



Poulsen, V. A., 869. 



Poulton, E. B., Colour-relation between 



larva of Smerinthus ocellatus and its 



Food-plants, 429. 

 Powell's (T.) Achromatic Oil-immersion 



Condenser, 552. 



Apochromalic Objectives, 1110. 



Prantl, K., Dehiscence of the Sporan- 

 gium of Ferns, 1020. 

 Preservative Fluids, Test for, 174. 



