XXXIl 
the Variation of the Population of India Compared with 
the Variation of Rainfall 1891-1901, W. L. Dallas, 623 
Meteors: the Leonid Shower of 1903, 29, 521; W. F. 
Denning, 29, 57, 446; John R. Henry, 80, 224; Alphonso 
King, 105; M. Fiévez, 446; M. Terby, 446; Radiant 
Point of the 1903 Leonid Shower, 331; the Late Leonid 
Meteor Shower, W. H. Milligan, 127 ; William E. Rolston, 
127; Observations of Leonids and Bielids at Athens, M. 
Eginitis, 186; Meteor Motion, M. H. Maw, 61; Bright 
Meteors, 65; a Bright Meteor, Roland Mott, 543; Brilliant 
Meteor Burst in the Bay of Biscay, 134; the January 
Meteors, W. F. Denning, 203; the Quadrantid Meteor 
Shower of 1904, John R. Henry, 272 
Meteorites: Meteoric Irons, F. Osmond and G. Cartaud, 
192; a Bengal Meteorite, T. H. Holland, 205 ; Organisms 
and Meteorites, Prof. James Ward, 393; the Geographical 
Distribution of Meteorites, Dr. O. C. Farrington, 399; 
the Durango Meteorite, Mr. Le Roy, 586 
Metric System of Weights and Measures, 
Siemens, 157 
Metrical Measures and Weights, Notes on the History of 
the, Prof. Herbert McLeod, F.R.S., 425 
Meunier (Louis), Action of Carbon Dioxide upon Aqueous 
Solutions of Aniline in the Presence of Nitrites, 239; 
Action of Carbonic Acid on Solutions of Sodium Nitrite, 
431 
Meyer (Edouard), the Emission of n-Rays by Plants, 287 
Meyer (Julien), Penetrating Power of the n-Rays and their 
Storage, 599 
Michelson (A. A.), Light Waves and their Uses, 50 
Microbiology: Studies in Heterogenesis, H. Charlton 
Bastian, F.R.S., 385 
Microphone, the Stentor, D. Zopke, 88 
Microscopy : Photomicrographs of Pleurosigma angulatum, 
J. W. Gordon, 23; Royal Microscopical Society, 23, 143, 
‘263, 358, 453, 575; Das Zeisswerk und die Karl Zeiss- 
Stiftung in Jena, 221, 497; Microscopic Method of Deter- 
mining Molecular Weights, G. Barger, 334; Crystallisa- 
tion Microscope Adapted to the Determination of the 
Melting Points of Silicates and Silicate Mixtures, Prof. 
C. Doelter, 350; the Vertical Illuminator, Mr. Nelson, 
453; Influence of the Antipoint on the Microscopic Image, 
Mr. Nelson, 453; a Microscope with Geometric Slides, 
Keith Lucas, 453; Theories of the Resolving Power of 
a Microscope, 497; Gesammelte Abhandlungen, Ernst 
Abbe, 497; Zur Theorie der Mikroskopischen — Bild- 
erzeugung, Victor Grunberg, 497; the Helmholtz Theory 
of the Microscope, J. W. Gordon, 497; the Theory of 
Optical Images, Lord Rayleigh, 497; Microscopic 
Analysis of Metals, Floris Osmond, Prof. J. O. Arnold, 
280; Alex. 
Sia) 
Middleton (Reginald E.), Water Supply, a Student’s Hand- 
book on the Conditions Governing the Selection of Sources 
and Distribution of Water, 99 
Migration, Bird, in Great Britain and Ireland, Wm. Eagle 
Clarke, 516 
Migration of Birds, Visitors from the High North in Central 
Italy, Prof. Henry H. Giglioli, 413 
Migrations between the Asiatic and the American Coasts 
of the Pacific Ocean, Periodic, J. P. Smith, 542 
Military Education, Science and, 321 
Milk: Bacteria in Milk and its Products, Prof. H. W. 
Conn, Prof. R. T. Hewlett, 28; Relation of Temperature 
to the Keeping Property of Milk, H. W. Conn, 303; 
Action of Formaldehyde on Milk, A. Trillat, 504 
Mill (Dr. Hugh Robert), Weather Changes and the Appear- 
ance of Scum on Ponds, 7; Variation of Rainfall over 
London Area, 88; Distribution of Rainfall over the 
British Isles, 135; the Great Dustfall of February, 1903, 
166, 587 . 
Miller (Dayton Clarence), Laboratory Physics, 246 
Miller (Mary Rogers), the Brook Book, 73 
Milligan (W. H.), the Late Leonid Meteor Shower, 127 
Millikan (Robert Andrews), Mechanics, Molecular Physics 
and Heat, 150 i 
Mills (Prof. Edmund J., F.R.S.), the Heat of Radium, 224 
Milne (Prof. J., F.R.S.), the Evolution of Earth Structure, 
with a Theory of Geomorphic Changes, T. Mellard Reade, 
251 
Milner (Lord), on Science and Industry, 615 
Index 
ae ee ee 
Nature, 
June 9, 1904 
Milroy (Dr. J. A.), Practical Physiological Chemistry, 557 
Milroy (Prof. T. H.), Practical Physiological Chemistry, 
557 
Mimetic Insects and Spiders from Borneo and Singapore, 
Mr. Shelford, 549 
Mimicry, Selektion, Darwinismus, M. C. Piepers, Prof. 
Sydney J. Hickson, F.R.S., 458 
Minchin (Prof. G. M., F.R.S.), Elementary Geometry, 
Practical and Theoretical, C. Godfrey and A. W. Siddons, 
97; a New Geometry for Schools, S. Barnard and J. M. 
Child, 97 
Mind has a Body, Why the, C. A. Strong, BB 
Mineralogy : the Various Attempts to Obtain the Diamond 
Artificially, M. Combes, 113; Mineralogical Society, 142, 
382, 575; Minerals from the Binnenthal, R. H. Solly, 
142; Meteoric Irons, F. Osmond and G. Cartaud, 192; 
New Sulphostannite of Lead from Bolivia, Teallite, G. T. 
Prior, 382 ; Obituary Notice of Ferdinand Fouqué, 492 ; the 
Occurrence of Thorium in Ceylon, Prof. Wyndham Dun- 
stan, F.R.S., 510; Sir William Ramsay, K.C.B., F.R.S., 
533, 559; Dr. T. A. Henry, 559; the Complex Nature 
of Thorium, Prof. Bohuslav Brauner, 606 ; Indices of Re- 
fraction of Antimonite, A. Hutchinson, 575; Irregularly 
Developed Crystals of Zircon from Ceylon, L. J. Spencer, 
575; the Lead and Zinc Deposits of South-western 
Wisconsin, Prof. U. S. Grant, 518; the Durango 
Meteorite, Mr. Le Roy, 586 
Minerals: Mineral Resources of the United States, 2; 
Mineral Output of India, 323; Mining of Non-metallic 
Minerals, Bennett H. Brough at Society of Arts, 475; 
a Study of the Radio-activity of Certain Minerals and 
Mineral Waters, Hon. R. J. Strutt at the Royal Society, 
473; ‘‘ Feather-ore,’’ ‘‘ Warrenite ’’ and ‘‘ Jamesonite,”’ 
L. J. Spencer, 575 
Mineral Springs, Radio-active Gas in, Lord Blythswood 
and H. S. Allen, 247 
Minguin (J.), Ethylidene-camphor, 455 
Mining: Ore Deposits, a Discussion, 78; Electricity in 
Mines, 494; Output of Coal During 1903, 496; Mining 
of Non-metallic Minerals, Bennett H. Brough at Society 
of Arts, 475; Death of Sir Clement Le Neve Foster, 
F.R.S., 586; Obituary Notice of, 614; the Elements of 
Mining and Quarrying, Sir C. Le Neve Foster, F.R.S., 
603 
Minor Planet Chicago (334), Orbit of the, Prof. Kurt Laves, 
542 
Minor Planet Iris, Variability of the, Prof. Wendell, 305 ; 
Ephemeris for the Minor Planet (7) Iris, Dr. J. Riem, 
dé 
Minor Planets, Variability of, Prof. Pickering and Prof. 
Wendell, 424 
Minute Marvels of Nature, John J. Ward, 106 
Mira Ceti, Spectrum of, Joel Stebbins, 207 
Mitchell (Prof. A. C.), a Multi-metre Resistance Bridge, 430 
Moehl (Prof. Heinrich), Death of, 110 
Moissan (Henri), New Method of Preparation of Argon, 
95; the Density of Chlorine Gas, 233; Action of Carbon 
upon Quicklime at the Temperature of Molten Platinum, 
359; Solubility of Silicon in Zine and Lead, 503; New 
Mode of Formation of Calcium Carbide, 503 ; the Density 
of Fluorine, 520; Physical Constants of Fluorides of 
Phosphorus, 551; Action of Silicon upon Water at a 
Temperature near 100° C., 623; Argon in the Gas from 
the Fumerolles at Guadeloupe, 623 
Mojsisovics (Dr. E. v.), Records Obtained from a Pair of 
Wiechert’s Seismographs Established at Pribram, 571 
Molekulartheorie mit Zugrundelegung der Keplerschen 
Gesetze fiir die Planetenbewegung, Hypothese zur 
Thermodynamik, Versuch einer leichtfasslichen Darstel- 
lung einiger Prinzipe der, Victor Griinberg, 171 
Molloy (Dr. Gerald), Subjective Images, 271 
Mollusca: the ‘* Little-neck Clam,’’ Dr. J. L. Kellogg, 36; 
the Pearl-oyster Parasite in Ceylon, Prof. W. A. Herd- 
man, F.R.S., 126; Report to the Government of Ceylon 
on the Pearl Oyster Fisheries of the Gulf of Manaar, 
W. A. Herdman, F.R.S., 465 ; the Nematocysts of Zolids, 
G. H. Grosvenor, 238 
Mond (Robert Ludwig), New Chronograph, 431 
Months, Memories of the, Sir Herbert Maxwell, 
292 
Bart., 
