INDEX. 



411 



Mycology, British, 65 

 The Selby Foray, 285 



— French, 181, 183 



— Greek, 182 



— of Shoulder-girdle and Pectoral Fin in 



Fishes, 3i3 



— Some Concepts in, 286 

 Myrmecophilous Beetle, 250 

 Myxomycete from Madagascar, 291 

 Myxomycetes, 383 



— Michigan, Collection of, 291 

 Myxosporidia, ludian, 47 



N 



Nakaharo, Waro, Structure of Oocytes of 



Stone-fly, 38 

 Nakano, H., Researches on the Develop- 

 ment and Nutrition of some Ohloro- 



phycesB, 61 

 Narcissus Disease, 185 

 Narita, Seiichi, Enumeratio Specierum 



Nemalionis et HehniiithocladJie Ja- 



ponicss, 173 

 National Physical Laboratory, Report for 



the Year 1917-1918, 77 

 Nebela scutellata Wailes, 189 

 Nemaliou muUifidum Ag., Cytology and 



Life-history of, 278 

 Nematode, New, in Calves, 147 



— Parasite of Chicken, 42 



— Study of a. 353 

 Nerve-conduction in Sea-water, Rate of, 



240 

 Nerves of Antennules Regenerated in 



Place of Eyes, 252 

 Nervous System, Influence of Temperature 



on, 27 

 Neural Folds, 232 

 Newman, H. H., Hybrids between Fun- 



dulus and Mackerel, 130 

 NichoUs, George E., iteissner's Fibre, 238 

 Niphrodium hiiiipes Hook, Apogamy in,268 

 Nitella, New, 377 

 Noeardia, 283, 294 

 Noctiluca miliar is Sur., 168 

 Nordqvist, O., Are there Varieties of Eel ? 



33 

 Notodontoidea, Pupae of, 38 

 Nucleus, Functions ot, 337 



— to Cytoplasm, Passage of Solids from, 



236 

 Nudibranchs, Assertive Mating in, 249 

 Nukada, S., Heart of Limulus, 350 

 Nusbaum-Hilarowicz, J., Organs of In- 

 ternal Secretion in Fishes, 340 

 Nuttall, George H. F., Biology of Lice, 37 



O 



Oak-mildew on Beech in Britain, 287 



— Stems, Depressed Segments of, 367 



— Timbers, Technology of, 264 

 Obituary — 



Crisp, Sir Frank, Bart., 194 



Grayson, H. J., 20 

 Octopus, Colour-sense in, 248 

 Oligochsets of the High Alps, 147 

 Olpidium, Life-history and Cytology of, 62 

 Onion Smut, 178 

 Onychomyrmex, 36 

 Ophiodothella on Ficus, Undescribed 



Species of, 186 

 Ophiuroids, Young, Rhythmic Pulsation 



in Madreporic Vesicle of, 150 

 Opossum, Development of, 28 

 Optical Instruments, Theory of Modern 



387 

 Opuntia, Fruit of, 370 

 Orchestia tucurauna Fritz Muller, 253 

 Organography of Plants, 57 

 Orthobiont, Phylogenesis of the, 271 

 Orthoptera, Olfactory Organs of, 38 

 Orton, C. R., Polemoniaceous Rusts, 282 

 Osborn, T. G. B., Habitat and Mode of 



Occurrence in South Australia of two 



Genera of Lycopods unrecorded for 



the State, 54 



— The Tuber of Phylloglossum, 371 

 Osborne, W. A., Aqueous Humour, 133 

 Osmotic Pressure of the Blood, 243 

 Osmunda, Archesporial and Meiotic Mitoses 



of, 268 

 Ostenfeld, C. H., Bacillariales, 273 



— Schizophyceae, 273 

 Ostracods, Upper Cambrian, 254 



Ovary, Relation of, to Causation of Sex, 333 

 Overholts, L. D., Colorado Fungi, 380 

 Ovum, Human, Maturation of, 329 



Padina, Alternation and Parthenogenesis 

 in, 278 



Pallavicinia Lyellii, 163 



Palm, Bj., Scandinavian Taphrina Species, 

 177 



Paludestrina jenkinai. Parthenogenesis in 

 343 



Paludina vivipara, Dimorphic Sperma- 

 tozoa in, 135 



Papanicolaou, George N., 128 



Paper Pulp, Discoloration of, due to Fung 

 183 



Paramecium, Respiration in, 47 



Parker, G. H., Renilla, 151 



ParmelisB, Brazil, 290 



— Brown, 383 



Parsnip, Diseases of, 72 



