INDEX. 



841 



Porodko. T.. Filtration of Agar through 



(i lass- wool, 2. "«ii 

 Porphyra, Cytology, 219 

 Porter, A., New Schizouregarine from an 



Ascidian, 59 

 Porteviu, A.. Temper-colours, 263 

 Portier, P., Digestion in Larvae of Water 

 Beetles, 348 



— Kespiration of Aquatic Insects, 348 



— Stigmata of Aquatic Insects, 34S 

 Poschl, V., New Method of Measuring 



Hardness, 644 

 Potdar, G. N., Partition of Silver between 



Zinc and Lead, 1 17 

 Poterion, a Boring Sponge, 727 

 Potts, F. A., Sacculina on Shore-crab, 573 



— Sexual Phenomena in Free-living 



Nematodes, 187 

 Powell and Lealand's Microscope, 660 

 Powell's, Hugh, Large Microscope, 659 

 Microscope, 659 



— Portable Microscope, German Silver, 



made in 1850, Remarks on, 167, 267 

 Powers, J. H., Studies on Volvox, 361 

 Poyarkoff, E., New Ciliated Infusorian, 192 

 Praeger, R. L., Lastrea remota in Ireland, 



592 

 Preda, A., Italian Marine Algae, 486 

 Preparing Objects. See Contents, xxxvii 

 Preservative Fluids. See Contents, xxxvii 

 President, The, 129, 132, 134, 135, 136, 



266, 269 

 President's Address : On Seeds, with 

 Special Reference to British plants, 137 

 Price-Jones, C, 126 

 Primnoids, New, 191 



Prism, Direct-vision, and Apparatus for 

 Projection of Spectra and for Illumina- 

 tion with Spectral Light, 515 

 Prisms, Angle, Hensoldt and Sons, New, 



for 90°, 180°, 45°, and Roof-prism, 518 

 Pritchard, G. B., Genus Linthia in Vic- 

 toria, 189 

 Prizibram, H., Experimental Biology, 563 

 Proboscis of Blow-Fly, 182 



— of Lepidoptera, Papillae, 569 



Sensorial Papillae, 348 



Probst, R., and others, Uredineae, 225 

 Proca, G., Differential Staining of Spores, 



666 

 Projection and Drawing Apparatus, Simple, 

 519 



— and Photomicrography. Advances, 253 



— Apparatus for Liquid, Koristka's, 771 



— Macro- and Micro-, Koristka's Complete 



Apparatus for, 243 



— of Spectra and Illumination with Spec- 



tral Light, Direct Vision Prism and 

 Apparatus for, 515 

 Projections, Autochrome and other, Highly 



Reflecting Lantern Screens, 769 

 Propagula, Artificial Production in Bar- 

 bula, 71 



Prosobranch, New, on Sea-urchins, 456 

 Prosorochmus viviparus, Development, 



357 

 Protandry in Grubea, 49 

 Proteus anguineus. Brain, 453 

 Prothallia, Effect of Different Light-rays 



on, 68 

 Prothallium of Kaulfussia and Gleichenia, 

 68 



— of Lycopodium complanatum, 68 

 Prothal'lus, Fossil, 205 



Protista and Rotifers, Mounting in Canada 



Balsam, 24, 120 

 Protoplasm, Influence of Aluminium Salts, 



64 

 Prototracheata. See Contents, xiv 

 Protozoa. See Contents, xix 

 Protula meilhaci, Polyspermy, 49 

 Proust, L., Ferns of the Canary Islands, 



369 

 Proventriculus, Bird's, Functional Changes, 



341 

 Prowazek. S., Haemogregarines in a Penta- 

 stomid, 470 



— Life-history of Glaucoma scintillans, 



59 

 Prunus padus, Witches' Brooms on, 83 

 Pseudemydura, 710 

 Pseudo-Absidia vulgaris, 495 

 Pseudo-coli Bacillus, Anaerobic, 94 

 Pseudo-tuberculous Enteritis, of Cattle 



and Avian tuberculin. 761 

 Psilotum triquetrum, Abnormality, 67 

 Pteridophyta of the French Mediterranean 



Basin, 68 



— Phylogeny, 199, 367 



and Inter- relationships, 65 



— Sporangiopbore, 66 



— See Contents, xxii 

 Pteridophytes of Samoa, 594 

 Pteropod, New, from New England, 345 

 Pteropods and Heteropods of Coasts of 



Ireland, 567 



Pulsation in Medusae, 190 



Punnett, R. O, Alleged Influence of Leci- 

 thin on Determination of Sex, 447 



Puschin, N. A., Lead-palladium Alloys, 

 789 



— Platinum-lead Alloys, 406 

 Pycnogonids, Eastern Pacific, 720 

 Pyogenic Cocci, 93 



Pyreuoid and Cell-nucleus, Connection, 



494 

 Pyrenomycete, Rare, 496 

 Pyronema confluens. Nuclear Phenomena, 



74s 

 Pyrophilous Fungi, Studies, 612 

 Pyrosoma, New Species, 455 



— Phosphorescence, 180 



Pythium, Genus, and some Chytridiaceae, 



82 . 

 Python, Haemo^regarine, 730 

 Pyxilla and Allied Genera, 491 



