Nature, - . 2 
Index XXxXl 
June 9, 1904 
Mazé (M.), Marsh Gas Fermentation and the Ferment which 
Produces it, 120 
Mazelle (Dr. Eduard), the Connection between Micro- 
seismical Pendulum Movements, Wind and other Natural 
Phenomena, 160 
Measurement of Certain very Short Intervals of Time, on 
the, Lord Rayleigh, O.M., F.R.S., 560 
Measures, Metrical System of Weights and, 280; Alex. 
Siemens, 157 
Measures and Weights, Notes on the History of the 
Metrical, Prof. Herbert McLeod, F.R.S., 425 
Mechanics : Experimental Determination of the Momentary 
Pressure Resulting from Shock, M. Ringelmann, 24; 
Institution of Mechanical Engineers, the Newcomen 
Engine, Henry Davey, 67; Mechanics, Molecular Physics 
and Heat, Robert Andrews Millikan, 150; Theoretical 
Mechanics, an Elementary Text-book, L. M. Hoskins, 
268; Graphic Statics, with Applications to Trusses, 
Beams and Arches, Jerome Sondericker, 292; Technical 
Mechanics, Prof. E. R. Maurer, 314; Death of Dr. 
Wilhelm Schnell, 468; the Principles of Mechanism, 
Herbert A. Garratt, 485; Graphic Methods in an Educa- 
tional Course in Mechanics, W. Larden, 607 
Medicine: Medical Science and the Anti-vivisectionists, 81 ; 
Medical Report of the Local Government Board, Prof. 
R. T. Hewlett, 155; Treatment of Malignant Growths by 
Physicotherapeutic Means, Dr. J. A. Riviere, 280; Con- 
tributions to the Science of Medicine, Prof. R. T. Hewlett, 
285; a Laboratory Manual of Physiological and Patho- 
logical Chemistry for Students of Medicine, Prof. E. 
Salkowski, 557; Chloroform Anesthesia, Dr. A. D. 
Waller, F.R.S., 572 
Meldola (Prof. R., F.R.S.), a Systematic Survey of the 
Organic Colouring Matters, Arthur G. Green, 529 
Mellor (J. W.), the Union of Hydrogen and Chlorine, the 
Action of Temperature on the Period of Induction, 478; 
Further Experiments on the Action of Light on Chlorine, 
478 
Memories of the Months, Sir Herbert Maxwell, Bart., 292 
Men and Matters, Divers, Right Hon. Lord Avebury, 481 
Mendel’s Laws and their Application to Wheat Hybrids, 
R. H. Biffen, 454 
Mendeléeff (Prof. D.), an Attempt Towards a Chemical 
Conception of the Ether, 558 
Mensuration, Examples in Practical Geometry and, J. W. 
Marshall and C. O. Tuckey, 146 
Mental Activity, the Physiology of, E. Gley, 244 
Meridian Circle Observations of Eros and Nova Persei, John 
A. Dunne, 282 
Meridian Circle Observations at the Lick Observatory, 
Richard H. Tucker, 378 
Meridian Photometer Observations, Harvard, Prof. Solon 
I. Bailey, 305 
Meslin (Georges), Compensation of Interferences and the 
Measurement of Small Thicknesses, 623 
Mesnager (M.), a Method for the Comparison of Thick- 
nesses, 287 
Mesnil (F.), a New Protozoa, Piroplasma Donovant, the 
Parasite of an Indian Fever, 167; Piroplasma Donovant 
and Black Fever, 335; African Trypanosome, Pathogenic 
for Horses, 528 
Metallography of the Allotropic School, Floris Osmond, 
Prof. J. O. Arnold, 553 
Metallurgy: Hardening, Tempering, Annealing and 
Forging of Steel, Joseph V. Woodworth, Prof. Jan0: 
Arnold, 124; Constitution and Properties of the Silicon 
Steels, Léon Guillet, 192; Metallurgical Analysis and 
Assaying, W. A. Macleod and Charles Walker, 459 ; the 
Theory of Nickel Steels, M. Guillaume, 496; Corr., 567 
Metals: the Line Spectra of the Alkaline Metals, H. Konen 
and A. Hagenbach, 137; the Elastic Limit of Metals, 
M. Frémont, 276; Microscopic Analysis of Metals, Floris 
Osmond, Prof. J. O. Arnold, 553 
Meteorology : Handbook of Climatology, Dr. Julius Hann, 
Dr. W. N. Shaw, F.R.S., 3; Variation of Atmospheric 
Absorption, Prof. S. P. Langley, 5; Solar and Magnetic 
Disturbances, Dr. Charles Chree, F.R.S., 6; Prof. A. 
Fowler, 6; Magnetic Storms, Aurore and Solar Pheno- 
mena, Dr. William J. S. Lockyer, 9; Telegraphic Dis- 
turbances in Spain on October 31, 1903, Prof. Augusto 
Arcimis, 29; Magnetic Storm of October 31, 1903, Th. 
Moureaux, 48; Em. Marchand, 96; Magnetic Storm of 
October 31, 1903, at Falmouth, E. Kitto, 62; the Mag- 
netic Storm of October 31, 1903, Superintendent Observ- 
atory Department, National Physical Laboratory, 56; 
Magnetic Disturbances and Sun-spots, F. Quénisset, 72 ; 
Solar Phenomena and Magnetic Storms, M. Quénisset, 
g0; Correspondence of Magnetic Storms with Solar 
Prominences, Dr. Lockyer, 95; Dr. Shaw’s Address at 
the British Association, Dr. R. T. Omond, 6; Dr. W. N. 
Shaw, F.R.S., 7; Weather Changes and the Appearance 
of Scum on Ponds, Platanus Orientalis, 7; Dr. Hugh 
Robert Mill, 7; H. J. Glover, 58; W. Ramsden, 104; 
Prof. Fred. J. Hillig, 127; Dates of First Fall of Snow 
on Fuji-Yama, Captain J. M. James, 12; Ten Years’ 
Observations of Solar Radiation in Switzerland, H. 
Dufour, 17; Variation of Atmospheric Absorption, 
J. Talbot, 30; Rocket Lightning, Prof. J. D. Everett, 
F.R.S., 30, 224, 375; W- A. Lee, 224; Explosive 
Action of Lightning, R. A. West, 31; the ‘‘ Sky- 
coloured’? Clouds, T. W. Backhouse, 31; Allerlei 
Methoden das Wetter zu Prophezeien, Prof. J. M- 
Pernter, 35; the ‘‘ Dew-bow,’’ Edward Hewitt, 57; Vari- 
ation of the Rainfall over the London Area from the Year 
1813, Douglas Archibald, 63 ; Variation of Rainfall over 
London Area, Dr. H. R. Mill, 88; Mr. Archibald, 88; 
Meteorological Observations with Kites at Sea, A. Le 
Rotch, 65 ; Volcanic Dust, the “ New Bishop’s Ring ”’ and 
Atmospheric Absorption, T. W. Backhouse, 81; Scientific 
Balloon Ascents, 89; Question how Far the Water Supply 
of a River is Affected by Drainage and Deforestation, 
F. G. Schwarz, 90; Means for Electrifying the Atmo- 
sphere, Sir Oliver J. Lodge, F-R.S., 94; Dissipation of 
Fog by Electrification, Sir Oliver J. Lodge, F.R.S., 94, 
135; Death of Prof. Heinrich Moehl, 110; Distribution of 
Rainfall over the British Isles, Dr. H. R. Mill, 135; the 
Weather for December, 1903, 158; Aurora Observed at 
Calgary, Canada, 158; the Great Dust Fall of February, 
1903, Dr. H. R. Mill and R. G. K. Lempfert, 166, 587 ; 
Royal Meteorological Society, 166, 191, 358, 453, 503, 
623; Indian Meteorological Memoirs, 178; Movements of 
the Upper Clouds, 178; the Unusual Sky Colours and the 
Atmospheric Circulation, Dr. A. Lawrence Rotch, 173; 
Climate of the Argentine Republic, Walter G. Davis, 230; 
Total Rainfall in 1903 at Stations which Report by Tele- 
graph, the Percentages of the Average Annual Fall for 
1866-1900, 231; Destructive Action of Rain upon Animal 
Life, W. Ruskin Butterfield, 296; the Deutsche Seewarte 
(Hamburg) Quarterly Pilot Chart for the North Sea and 
Baltic, 303; Buys Ballot’s Law and Trajectories of 
Air, Dr. Shaw, 303; Total Rainfall from January 3, 
348; Phenomenal Intensification of the Tidal Wave, 
February 2, 348; Simultaneous Solar and Terrestrial 
Changes, Sir J. Norman Lockyer, K.C.B., BeRc ones 5ili; 
the Climatology of 1903, J. Loisel, 378; Diminution in 
the Intensity of the Solar Radiation During the Years 
1902 and 1903, Ladislas Gorezynski, 359; the Antarctic 
Expeditions, 393; Climate of the British Empire During 
1902, 397; Rainfall Controlled by the Moon, H. (OE 
Russell, 397; Barometric Seesaws, Prof. Hofrath Julius 
Hann, 401; Direct Micrometric Method for the Measure- 
ment of the Diameter of Fog Particles, Dr. Cy Barus; 
443; Climatology of California, A. G. McAdie, 444; 
Phenological Observations for 1903, E. Mawley, 453; 
Observations by Means of Kites, W. H. Dines, 453; 
Death of Dr. von Pallich, 468; State of the Ice in the 
Arctic Seas During 1903, 469; Sea Temperature and 
Solar Radiation, Prof. C. G. Knott, 479; Weather Folk- 
lore and Local Weather Signs, Willis L. Moore, 485; 
Photomicrographs of Fog Particles Condensed on X-Ray 
and other Nuclei, Dr. C. Barus, 494; Frost Effects at 
Niagara, Orrin E. Dunlap, 499; Relation between 
Temperature and Elevation, 500; Severe Storm in 
Réunion, 517; Imperial Meteorology, 537; Possible Con- 
nection of Diurnal Variation of Terrestrial Magnetism 
with Meteorology, A. S. Steen, 540; Temperatures and 
Conditions of Life at High Altitudes in Tibet, 540, 565; 
Atmospherical Radio-activity in High Latitudes, George 
C. Simpson, 573; Atmospheric Tides, W. Krebs, 597; 
Sun-spots and Temperature, Alex. B. MacDowall, 607; 
