300 



NA TURE 



[January 6, 1910 



tumour is young ; the resorption of a large tumour causes 

 the death of the animal, probably by poisoning. — CI. 

 Regraud and Th. Nogier : The complete and definitive 

 sterilisation of the testicles of the rat, without any lesion 

 of the skin, by a single application of X-rays filtered 

 through aluminium. — Fred Vies : The value of muscular 

 striae from the spectrographic point of view. — Jules 

 Auclair and Paul Braun : Two cases of Maltese fever 

 probably contracted at Paris. Both cases, which were 

 definitely proved to be true Maltese fever, were probably 

 contracted from handling sheep skins. — M. Ledentu : 

 Vascular tumours and aneurisms of the bones. — P. 

 Bonnier : The bulbar centres and intestinal diaphylaxy. — 

 B. Collin : Some remarks on two new species, Dendro- 

 soniides pagiiri and Podoplirya fixa. — Gabriel Arthaud : 

 The salivary spiroch,-Etes. — J. Savornin : The palaeogeo- 

 graphical evolution of Cape Bon and the direction of the 

 folds of the .Atlas, considered as the result of two orthogonal 

 erogenic actions. — Em. de Martonne : The unequal dis- 

 tribution of glacial erosion in the bed of Alpine glaciers. 

 — E. Noel : Tunisian hydrogeology. — Henryk Arctowski : 

 The dvnamics of climatic variations. 



GOTTINGEN. 



Royal Society of Sciences. — The ^a</:ri,/ifet: (phys\co- 

 mathematical section), part iii., for 1909, contains the 

 following memoirs communicated to the society : — • 



July 17. — H. Bohr : The summability of Diri'chlet series. 

 — D. Hilbert : The theory of conformal representation. — 

 D. Hilbert : The form of a surface of the fourth order. 



July 31. — A. Coehn and U. Raydt : The quantitative 

 validity of the law of distribution of charge between 

 dielectrics in contact. — C. Runge : The determination of 

 position in balloons. — P. Koebe : The uniformisation of 

 given analytic curves (iv.). 



DIARY OF SOCIETIES. 



THUESDAV. jANl'AHV 6. 



RoNTGEn Society, at 8.15.— (1) A Comparison between the Skotojraphic 

 and Electroscopic Effects of certain Animal Substances with the same 

 Effects of Uranium, Thorium, &c. ; (3) Retardation of Electroscopic 

 Leak by Means of Recognised Radio-active and other Substances; 

 (3) Masked Radio-.-ictivity ; (4) Influence of Radio-active and certain 

 other Subst.ance3 upon the Division of Animal Cells : Dr. W. S. Lazarus- 

 Barlow. 



FRIDAY, January 7. 



Institution of Mechanical Engineers, at 8.— The Application of the 

 Pilot Tube to the Testing of Impulse Water-wheels: \V. R. Eckart.— 

 An Account of a Visit to the Power Plant of the Ontario Power Co. at 

 Niagara Falls : C. W. Jordan. 



Institution of Civil Engineers, at 8.— Oil Fuel: D. S. Richardson. 



MONDAY, January 10. 

 ICAL Society, at 8.30. — Travels of a Naturalist 

 1 : Prof. H. H. W. Pearson. 



its Causes and 



ntary 



Royal Gei 



South-west Afi 

 Victoria Institute, at 4.30. — Modern Conceptions of the Unii 



G. F. C. Searle, F.R.S. 



TUESDAY, January ii. 

 Illuminating Engineering Society, at 8.— Gli 



Effects : Dr. J. H. Parsons. 

 Institution of Civil Engineers, at 8.— The Design of Rolling Stock 



for Smooth.rail Working on Heavy Gradients : F. W. Bach. 



WEDNESDAY, January 12. 



Geological Society, at 8.— The Igneous and Associated Sedi 



Rocks of the Glensaul District (County Galway) : C. I. Gardi 



Prof. S. H. Reynolds. With Palaiontological Notes by F. R. C. Reed. 

 — The Gneisses and Altered Dacites of the Dandenong District (Victoria), 

 and their Relations to the Dacites and to the Grano-Diorites of the Area : 

 Prof E. W. Skeats. — Recent Improvements in Rock-section Cutting 

 Apparatus : H. J. Grayson. 



THURSDAY, January 13. 



Royal Society, at i.y>.— Probable Papers: On the Atomic Weight of 

 Strontium: Sir Edward Thorpe, C.B., F.R S., and A. G. Francis.— On 

 the Approximate Arithmetical Solution by Finite Differences of Physical 

 Problems involving Differential Equations, with an Application to the 

 Stresses in a Masonry Dam : L. F. Richardson.— On a Method of Deter, 

 mining the Viscosity of Gases, especially those available only in Small 

 Quantities: \. O. Rankine.— Recombination of Ions at Different Tem- 

 peratures : P. Phillips —On the Electricity of Rain and Sno* : Dr. G. C. 

 Simpson. — On the Polarisation of X-Rays compared with their Power of 

 Exciting High Velocity Kathode Rays : L. Vegard. 



Mathematical Society, at 5.30. — The Transformations of Coordinates 

 which can be used to transform One Physical Problem into Another : 

 H. B.iteman.— On Homogeneous Oscillation : Dr. W. H. Young.- On 

 the Determination of a Semi-continuous Functio ' ~ ' " 



of Values: Dr. W. H. and Mrs. Young.- Note 

 the Theory of Divergent Series : G. H. Hardy 



NO. 2097, VOL. 82] 



tabl. 



a Former Paper on 

 On the Expression of 



a Certain Function by Means of a Series of Polynomials : Dr. H. F. 

 Baker.— On the Double Sixers of a Cubic Surface : Dr. H. F. Baker. 



Institution of Electrical Engineers, at 8.— Lord Kelvin's Work in 

 Telegraphy and Navigation (Second Kelvin Lecture) : Prof. J. A. Ewing, 

 C.B., F.R.S. 



FRIDAY, January 14. 



Malacological Society, at 8.— Note on Helix dcsertorujtt : Mrs. G. B. 

 Longstaff. — Description of Tkersites (Glyptorhagada) Hillieri, n.sp., 

 from Central South Australia: E. A. Smith.— Note on Athoraeophorus 

 Scliauinslandi: Henry Snter. — The Ampullaridae of the Eastern Hemi- 

 sphere. Description of New Species of Donovania, Scutellina, Fissurella, 

 and Pisania : G B. Sowerby. — Marine Mollusca from the Kerniadec 

 Islands. Notes on Polyplacophora, chiefly Australasian : T. E. Iredale.— 

 Helicoids from New Guinea and Description of a New Species of 

 Papuina : G. K. Gude. 



CONTENTS. PACK 



The Ether of Space. By H. L 271 



New Methods of Weather Forecasting 271 



Medical Embryology. By Dr. Francis H. A. 



Marshall 272 



Fundamental Problems of Psychiatry 273 



The Ainobiography of N. S. Shaler. By Prof. 



Grenville A. J. Cole . . 274 



Mathematical Text-books 275 



Our Book Shelf:— 



McCook : " Ant Communities and How they are 



(loverned. A Study in Natural Civics " 276 



Biker: " Sextant Errors."— C. V. B 276 



"The British Journal Photographic Almanac, 1910" 277 

 Ellis: "Outlines of Bacteiiolog>' (Technical and 



Agricultural)."— Prof. R. T. Hewlett ... .277 

 Browne : " A Descriptive Catalogue of the Dobree 



Collection of European Noctux " 277 



Samuelson : "The Human Race : its Past, Present, 



and Probable Future."— E. H. J. S 277 



Letters to the Editor: — 



The Heat developed during the Absorption of Elec- 

 tricity by Metals. — Profs. O. W. Richardson 



and H. L. Cooke 278 



Malaria and Ancient Greece.— Dr. George A. Auden 278 

 An Example of Spurious Correlation. — Dr. Gilbert 



T. Walker 279 



On Fluorescence Absorption.— J. Butler Burke . . 279 



Adsorption. — Alfred Tingle 279 



The Terminal Velocity of Fall of .Small Spheres in 



Air.— Edith A. Stoney 279 



Positions of Bird.s' Nests in Hedges. — A. R. Hor- 



wood 279 



Studies in Polychset Larva?. — F. H. Gravely . . . 2S0 



Cross-fertilisation of Sweet-peas. — tt 280 



A Supposed New Mineral.— Richard J. Moss and 



Henry J. Seymour 280 



The Heart of Antarctica. (Illustralcd.) By Prof. 



J. W. Gregory, F.R.S 2S0 



Game Preserves in British East Africa. {Illus- 

 tralcd.) By Sir H. H. Johnston, G. CM. G., K.C.B. 283 

 Problems of Science Teaching in Schools. By 



G. F. Daniell 2S4 



Magnetic Survey of South Africa. By G. W. W. 2S5 



M. Bouquet de la Grye 2S6 



Prof. J. S. H. Pellat 287 



Duke Karl Theodore of Bavaria 287 



Notes 288 



Our Astronomical Column :— 



Astronomical Occurrences in January 292 



Ilalley's Comet 292 



Elements and Ephemeris for Daniel's Comet, igogi' . 292 



Solar Activity and Magnetic Storms 293 



Star Swarms 293 



A Large Nebula in Cetus 293 



Annuaire astronomique et meteorologique, 1910 . . . 293 



Prize Awards of the Paris Academy of Sciences. 293 



Climatological Reports 294 



Educational Tendencies in the United States . . 295 

 Ole Romer and the Thermometer. By Dr. Kirstine 



Meyer 296 



University and Educational Intelligence 298 



Societies and Academies 299 



Diary of Societies 300 



