INDEX. 



669 



Parsons, F. A., 639 



Partbenocarpy, Parthenogenesis and Phe- 



nospermy in Nicotiana, 137 

 Parthenofrenesis among Worker Bees, 461 



— Artificial, in Cumingia. 291 



— I';irthenocarpy and Plienospermy in 



Nicotiana, 137 

 Particles, Silicious. in Lung. Demonstra- 

 ting, 257 

 I'asclier, A., Crossing of One-celled Hap- 



loid Organisms, 606 

 Pathogenicity of Giardta (Lamhlia) inies- 



timdis, 168 

 Patouillard, M., Lepiota from the Nests 



of Termite Ants, 328 

 Patten, B. M., Whip-tail Scorpion's Ee- 



action to Light, 58-1 

 Paulson, K.. Chxnotheca melaiiophxa var. 



flavoc.'triua, 499 



— Report on Biological Work at Euhleben, 



644. 64.5 

 PavilJard, J., French Peridiniese, 287 



— Pelagic Diatoms of the Gulf of Lj'ons, 



482 

 P-earl, R., Effect of Alcohol on Germ-cells, 

 282 



— Eflect of Calcium Salts on Growth, 444 



— Fertility and Age, 445 



— The Selection Problem, 454 



— and another, Dwarf Eggs of Domestic 



Fowl, 438 

 Pearlite, 350 



Pecaw Catkins, Disease, 332 

 Pectoral Giidle of Tetrapod Vertebrates, 



575 

 Pediastrnm, Structure, 405 

 Pedicel, Floral, of M-.sembryanthemum, 



137 

 Pi glion, v., Peronosjoora on Hemp, 487 

 Pendulum, Photograpliic. Foucardt, 631 

 Penfold, W. J., Etiology of Typhus, 161 

 Penis in Hedgehog, Structure, 383 

 Pennatulacea, MoMOgraj)h on, 228 

 Pepper. Structure, 233 

 Peracarida, Limb-flexures and Limb-taxis, 



298 

 Pereiraz, J., and another. Influence of 



Coloured Light on Butterflies, 460 

 Peridinieae, French, 237 

 Peripatus, New Species, 297 

 Perithecium, Development, 150 

 Perman, E., Course of Vagus Branches on 



the Stomach, 289 

 Peronospora on Hemp, 487 

 Petersen, J. B., Danish .iErophilous Algae, 



611 

 Peterson, A., Head-capsule and Mouth- 

 parts of Diptera, 580 

 Pethybridge, G. H., and another, Dry-rot 



of Potatoes, 621 

 Pevalek, J., Algae of North Carolina, 146 

 Peyronel, B., Black Spot of Chestnuts, 



245 



Peyronel, B., Distribution of Hymeno- 



mycetes with reference to Ectotrophic 



Mycorhiza, 412 

 Pharyngeal Glands of Earthworms, 587 

 Phasmids, Antennae, 218 

 Pheuospermy, Parthenogenesis and Par- 



thenocarpy in Nicotiana, 137 

 Phisalis, M., Poison Glands of Snakes, 449 

 Pholiota, Basidiocarps in, Development, 



615 

 Pliomopsis, British Isles, 489 

 Phoresis, 119 

 Phoronidea, Study, 590 

 Phoronis oralis. 396 

 Photographic Foucault Pendulum, 631 



— Lens, Measuring Focal Length, 631 

 Photography of Eye Specimens, 252 

 Photomechanical Changes in Retina of 



Amblystoma Larvae. 571 

 Photomicrography, Exposure, 422 



— See CoxTENTs 



Pliotophores of Sergestes prehensiUs, 585 

 Phycoerythrin in Nostoc commune, 239 

 I'iiyllogiossum, Prothallus, 235 

 Phylloxera Galls, 389 

 Physarum carneum G. Lister and Sturgis, 



265 

 Physiaceae, Norwegian, Monograph, 159 

 Physiology of Seed Plants. See Contents 

 Ph} toplaukton, Antarctic, 316 



— of the Indian Ocean, 237 

 Piemeisel, F. J., Parasitism of UstiJaijO 



Zese, 614 



Piezoclonus lituratus, Life-history, 583 



Pig Embryo, Yolk-sac, 567 



Pigeons, Inequality of Testes, 283 



Pigment -formation and Chromoplasts, 

 Origin, 231 



Pigmentation, Pineal Gland and, 573 



Pigott, E. F., Photographic Foucault Pen- 

 dulum, 631 



Pilsbry, H. A., Monograph on American 

 Sessile Barnacles, 122 



Pineal Gland and Pigmentation, 573 



Pinnulariae, 317 



Pistillaria, 411 



Pituitary Body, 384 



— Feeding, Influence on Growth and 



Sex Development, 444 

 Plagiotliecium, 404 

 I'lague, Bubonic, in England, 248 



— Saturation Deficiency and Tempera- 



ture, 419 

 Planaria, Control of Head Form and 



Frequency. 127 

 IMankton, Fresh-water, Australian, 482 



— Marine, 384 



— Swedish Expedition to Spitzbergen 



1908, 607 

 Plankton-algae, Swedish, 237 

 Plaunrbis, Retinal Pigment, Migration, 456 

 Plant Diseases, 156, 246, 329-332, 415, 497, 



618 



