868 
INDEX. 
Peters, W. L., Organisms of Leaven and 
their relation to the Fermentation of 
bread, 75. 
Pettigrew, J. B., On the use of the Camera 
Lucida, 666. 
Peziza tuberosa, 75. 
Pfeifer, W., Process of Oxidation in L’ving 
Cells, 210. 
Pfeiffer, — ., Microphotographic Atlas of 
Bacteriology, 230. 
, New Capsule Bacillus, 80. 
Phagocytes, 226. 
— — of Alimentary Canal, 310. 
Phallus impudicus, Structure of, 78. 
Phanerogamia, Anatomy and Physiology 
of. See Contents, xix. 
Philibert, — ., Peristome, 68, 488. 
i’hilodina macrostyla, 610. 
Phloem, Intraxylary, 353. 
Phlyctospora, Spore-formation in, 77. 
Phoronis, New, 460. 
Phosphorescence, Marine, 159. 
Photobacterium luminosum, 81. 
Photomicrography. See Contents, xxxiii. 
, at Medical Congress of Berlin, 1890, 
769. 
Phreoryctes, 606. 
Phryganid Larvae, Eyes of, 450. 
Phyeopeltis. 643. 
Phyllis, Fertilization of, 483. 
Phyllium, Ovarian Envelope of, 596. 
Phyllodes, 356. 
Phyllodromia (Blatta) germanica, Herma- 
phrodite Rudiment of Gonads in Male 
of, 714. 
Phymosoma variaus, 330. 
Physianthus albens, Fertilization of, 746. 
Physomyces, 644. 
Phytocrene macrophylla, Stem of, 55. 
Pliytophthora infestans, Development of, 
644. 
, New American, 219. 
Pickerel-weed Pollen, 354. 
Piersol, G. A., Fixing Paraffin Sections to 
the Slide, 823. 
, Some Experiences in Photomicro- 
graphy, 516. 
, Structure of Spermatozoa, 309. 
Pigment and Conjugation of Euglena, 732. 
, Arrangement of, in Eye of Arthro- 
pods, 805. 
in Eyes of Arthropods, 709. 
Pigment-cells, Division of, 575. 
Pigments, Resistance of living Bacteria 
and Yeast-cells to, 759. 
Pike, N., Preparing, Preserving, and ! 
Mounting Objects of Natural History j 
for the Microscope, 809. 
Pine Trees, New Disease of, 493. 
Pinguicula, Digestion of Albuminoids by j 
the leaves of, 362. 
Pintner, T., Structure of Cestoda, 183. 
Pirotta, R., Anatomy of Keteleeria, 739. 
Piscicola, Rings of, 329. 
Pitchers of Dischidia, 742. 
of Insectivorous Plants, 480. 
Placenta, 435. 
of Dugong, 574. 
of Plants, Development of, 624. 
of Rodentia, 18. 
, Structure of, in Man and Monkeys, 
308. 
, Theory of, 693. 
Planarian, Australian Land, 332. 
, New Land, 182. 
Planarians, New Land, from Sunda Islands, 
332. 
Plants, Apparatus for illustrating the 
Growth of, 631. 
Plate, L.H ,Kotifers of Gulf of Bothnia, 185. 
Platner, G., Demonstrating the Neuro- 
keratin Network of Nerve-fibres, 111. 
, Preparation of Cells for showing the 
Division of Nuclei and the Formation of 
Spermatozoa, 109. 
Platydactylus, Development of, 308. 
Platygaster instricator, Development of, 
713. 
Platyhelminthes. See Contents, xv. 
Platysticta, 75. 
Plaxton, J. W., A Camera Lucida for 
nothing, 515. 
Plehm, F., Malarial infection, 500. 
Pleurophyllidiidre, 316. 
Pleurosigma augulatum, 103, 497. 
, New Photograph of, 261. 
formosum, Formation of Images in, 
261. 
Pneumonia, contagious Bovine, Specific 
Microbe of, 224. 
“ Pock-disease” of Tobacco, 635. 
Podaxis, 493. 
P- dostemacese, 200. 
Podwyssozki, W., Jun., Terminology of 
Phagocytes, and formation of giant-cells, 
378. 
Polarized Light, How to mount Objects in 
Motion for Examination by, 414. 
Poli, A., Notes on microtechnique, 523. 
, Millon’s Reagent, 828. 
, The condenser in microscopy, 240. 
, The Microscope and its theory, 659. 
Pollen, Development of, 200. 
in Ricinus, Scattering of, 360. 
, Pickerel- weed, 354. 
Pollen-grains in Rosa, 200. 
, Membrane of, 56. 
, Thickening-layers of, 56. 
tubes, Cause of the Direction of 
Growth of, 209. 
of Primrose, Cultivation of, 61. 
Pollination and Dissemination of Gymno- 
sperms, 745. 
Pollination and Distribution of the Sexual 
Organs, 481. 
by Insects, 60. 
