176 



NA TURE 



[June 13, 1901 



found that the electromotive force of magnetisation of soft iron 

 increases with the temperature, this variation with the tempera- 

 ture being greater as the field is more intense. With bismuth 

 the opposite effect is observed, the electromotive force of mag 

 netisation falling off as the temperature is raised. — The action of 

 the X-rays on conductors and on insulators, by M. J. Semenow. 

 — On the alloys of aluminium. Compounds of aluminium with 

 molybdenum, by M. Leon Guillet. By reducing molybdic acid 

 with a large excess of aluminium three definite compounds were 

 obtained corresponding to the formuLv AI4M0, AlMo, AljMo, 

 analyses of which are given.— On the alloys of aluminium and 

 magnesium, by M. Boudouard. A set of determinations of the 

 melting points of thirteen aluminium-magnesium alloys ranging 

 from pure aluminium to pure magnesium. The curve of results 

 presents three minima and two maxima, pointing to the existence 

 of two definite compounds, AlMg., and AlMg. — On the cellular 

 structure of some metals, by M. G. Cartaud. — Acidimetry of 

 phosphoric acid by baryta, strontia and lime, byM. J. Cavalier. 

 — On the aluminium contained in mineral waters, by M. F. 

 Parmentier. The author points out that in spite of numerous 

 analyses of the waters from Puits Chomel and Grande Grille 

 the presence of aluminium in notable quantity has been over- 

 looked. — The action of isobutylene bromide on benzene in pre- 

 sence of aluminium chloride, by M. F. Bodroux. The principal 

 products are a butyl-benzene and dimethyl-phenyl-benzyl- 

 methane. — The action of the alkyl malonic esters upon the 

 diazoic chlorides, by M. G. Favrel. Ethyl-methylmalonate, 

 treated with a solution of diazobenzene chloride in presence of 

 sodium acetate, gives the phenylhydrazone of ethyl pyruvate. 

 Diazoparatoluene gives an analogous reaction. — On a new mode 

 of decomposition of bisulphite derivatives, by MM. P. Freundler 

 and L. Bunel. Alkaline nitrites may replace the alkaline 

 carbonates in this reaction — On the secondary products formed 

 in the action of sulphuric acid upon wood charcoal, by M. A. 

 Verneuil. The tetra-, penta- and hexa-carboxylic acids of 

 benzene can be isolated from the residue. — On a new gregarian 

 parasite of the mussel, by M. Louis Leger. — On the cilia of the 

 Ctenophora; and on ciliary insertions in general, by M. P. 

 Vignon. — Experimental researches on the respiration of anne- 

 lids. Study of Spirograp/iis Spallanzaini, by M. Bounhiol. 

 — The defensive or odorous glands of the cockroach, by M. K. 

 Bordas. — On the structure of the shoot in ligneous plants, by 

 M. Marcel Dubard. — On the proportion of water compared 

 with the ripening of ligneous plants, by, M. F. Kovessi. — On 

 the electrolysis of animal tissues, by M. Edouard Branly. — The 

 sources of iodine in the organism. The biological cycle of this 

 metalloid, by M. P. Bourcet. — A method of preparing low 

 brewery yeasts fermenting at a high temperature, by M. Georges 

 Jacquemin. — The otoliths and audition, by M. Pierre Bonnier. 

 — A case of trichosporia (piedra nostras) observed in France, by 

 M. Paul Vuillemin. — On the thunderstorm in Paris of May 29, 

 by M. J. Jaubert. 



DIARY OF SOCIETIES. 



THURSDAY, June 13. 



Royal Society, at 4.30.— Bakerian Lecture : Prof. James Dewar, F.R.S. 

 — Tfie Nadir of Temperature and Allied Problems, (i) Physical Proper- 

 ties of Liquid and Solid Hydrogen ; (2) Separation of Free Hydrogen 

 and other Gases from Air ; (3) Electric Resistance Thermometry at the 

 Boiling Point of Hydrogen ; («) Experiments on the Liquefaction of 

 Helium at the Melting Point of Hydrogen ; (5) Pyro-Electricity, Phos- 

 phorescence, &c. 



Mathematical Society, at 5.30.— Remarks on the Quartic Curve 

 2a3|3 + ,nS3y+„y3„=o: A. B. Basset, F.R.S. —The Theory of Cauchy's 

 Principal Values, II.: G. H. Hardy.— The Rational Solutions of the 

 Equation K3+z;3-i-w3-4-/3=o : Prof. Steggall.— Invariants of Curves on 

 the same Surface, in the Neighbourhood of a Common Tangent Line : 

 T. Stuart. 



FRIDAY, June 14. 



Royal Astronomical Society, at 5. — Observations of Mars made at 

 Mr. Edward Crossley's Observatoiy, Bermerside, Halifax, during the 

 Opposition of 1900-01 : J. Gledhili. — A Modified Form of Revolving 

 Occulter for Adapting the Exposure of the Sun's, Corona to its Actinic 

 Intensity at all Distances from the Moon's Limb: D. P. Todd.— The 

 Oxford Determinations of Stellar Parallax— Reply to Prof. Turner ; Sir 

 D. Gill.— Sun-spots and Magnetic Disturbance : W. Ellis.— Observations 

 of Nova Persei made at Birr Castle, Parsonslown : The Earl of Rosse.— 

 Secular V.ariation in the Period of R. Carina:: A. W. Roberts.— The 

 Great Comet of igoi, as observed at the Royal Observatory, Cape of 

 Good Hope : Sir D. Gill.— The Oxford Determinations of Stellar Paral- 

 lax-Further Reply to Sir D. Gill : H. H. Turner.— Measures of Double 

 Stars made at Mr. E. Crossley's Observatory, Bermerside, Halifax : J. 

 Gledhili. — Corrections to reduce the Revised Madras Catalogue of Stars 

 for 1835-0 to the Fundamental Catalogue of Auwers : A. M. W. Down, 

 ing. — The Lyrids, 1901 April, observed at Cambridge : J. C. W. 

 Herschel. 



NO. 1650, VOL. 64] 



Physical Society, at 5.— On Herr Jahn's Measurements of the Electro- 

 motive Force of Concentration Cells : Dr R. A. Lehfeldt.— Exhibition 

 of a Set of Specimens of Jena Glass : Prof. S. P. Thompson, F.R.S. 



Malacological Society, at 8.— Notes 'on Ariophanta, Xcstina, Nil- 

 S'lia and Euplecta : W. T. Blanford.— Pleistocene Shells hitherto un- 

 recorded from the Raised Beach of Perim Island, Red Sea : Rev R 

 Ashington Bullen.— On a Dibranchiate Cephalopod from the London 

 Clay of Sheppy : G. C. Crick.— (i) Description of a New Species of 

 Acanthochitts from South Africa ; (2) Description of a New Species of 

 Helicina from the Pelew Island : E. R. Sykes.— On the Anatomy of 

 Helix politissima,'9K\Si:x, and its Generic Position in the Ariophan- 

 tina; : Lieut.-Colonel H. H. Godwin.Austen. 



TUESDA Y, June 18. 



Zoological Society, at 8.30. — Observations on some Mimetic Insects 

 and Spiders from Borneo and Singapore: R. Shelford.— Further Re- 

 searches upon the Molluscs of the Great African Lakes : J. E. S. Moore. 

 —On the Collections of Birds made by Dr. Donaldson Smith in Northern 

 Somali-land : Dr. R. Bowdler Sharpe, 



MiNERALOGlCAL SociETV, at 8.— On the Anharmonic Ratio of Four 

 Faces in a Zone : Alfred Harker — On the Arrangement of the Chemical 

 Atoms in Potassium-Alum and in some of the Bodies which display 

 Tetartohedral Symmetry : William Barlow. — Remarks on Calaverite : 

 Herbert Smith, 



RovAL Statistical Society, at 5.— The Recent Gold Production of the 

 World : Wynnard Hooper. 



WEDNESDAY, June 19. 



Geological Society, at 8.— On Intrusive Tuff-like Igneous Rocks and 

 Breccias in Ireland : J. R. Kilroe and Alexander McHenry.— The Use 

 of a Geological Datum ; Beeby Thompson. 



Royal Meteorological Society, at 4.30.— The Eclipse Cyclone, the 

 Diurnal Cyclones, and the Cyclones and Anticyclones of Temperate Lati- 

 tudes : H. Helm Clayton. — The Seismograph as a Sensitive Barometer ; 

 F. Napier Denison. 



Royal Microscopical Society, at 8.— Examination of the Abbe Dif- 

 fraction Theory of the Microscope : J. W. Gordon. 

 THURSDAY, June 20. 



Linnean Society, at 8. — On the Freshwater Algse of Ceylon: W. West 

 and G. S. West.— On Coprophilous Fungi: George Massee and E. 

 Salmon.— Revision of the Genus Hypericophyllum, Steetz, with Notes 

 on certain Genera with which it has been confused : N. E. Brown. 



Chemical Society, at 8.— Ballot for ihe Election of Fellows.— The Direct 

 Union of Carbon and Hydrogen, Part II.: W. A. Bone andD. S. Jerdan. 

 —Ammonium and other Imidosulphites : E. Divers and M. Ogawa.— 

 Nitrilosulphates : E. Divers .-ind T. Haga.— The Decomposition of 

 Hydrocarbons at High Temperatures : W. A. Bone and D. S Jerdan.— 

 The Sugars from Cellulose : H. J. H. Fenton.— On a Theory of Chemical 

 Combination : G. Martin.— On the Occurrence of Paraffins in the Leaf 

 of Tobacco: Dr. T. E. Thorpe, C.B., F.R.S., and John Holmes.— Studies 

 in the Camphane Series, Part IV.: M. O. Forster.— On the Decomposi- 

 tion of Carbon Dioxide, when submitted to Electric Discharge at Low 

 Pressures: Dr. J. N. Collie, F.R.S.— Two New Substances in Lemon 

 Oil : H. E. Burgess. 



CONTENTS. PAGE 



Huxley. By Sir W. T. Thiselton-Dyer, K.C.M.G., 



F.R.S 145 



Terrestrial Magnetism and Atmospheric Electricity. 



By Dr. C. Chree, F.R.S 151 



Storage Reservoirs 154 



Our Book Shelf:— 



Reighard and Jennings : " The Anatomy of the Cat" 155 

 Jordan : " Essays in Illustration of the Action of 



Astral Gravitation in Natural Phenomena " ... 155 

 Letters to the Editor : — 



The National Antarctic Expedition. — Prof. Edward 



B. Poulton, F.R.S 156 



A Raid upon Wild Flowers. — David Houston . . 156 

 Emanations from Radio-active Substances. — Prof. E. 



Rutherford 157 



Long-tailed Japanese Fowls. — J. T. Cunningham . 158 



Variation in a Bee.— Prof. T. D. A. Cockerell . . 158 

 Foreign Oysters Acquiring Characters of Natives. — 



F. W. Headley 158 



Italian Exploration in Arctic Regions 158 



Hailstorm Artillery. By W. N. Shaw, F.R.S. . . 159 



Viriamu Jones. By Prof. W. E. Ayrton, F.R.S. . 161 



Notes. (Illustrated.) 162 



Our Astronomical Column : — 



Two New Variable Stars 167 



Uniform Transmission of Astronomical Telegrams . . 167 



Photography of Corona 167 



Electro-magnets, (lltuslrated.) By T. L. James . 168 

 Some Recent 'Work on Diffusion. By Dr. Horace 



T. Brown, F.R.S 171 



University and Educationallntelligence 174 



Societies and Academies 174 



Diary of Societies 176 



