4i8 



NATURE 



[June 19, 19 13 



Methodik des chemischen Unterrichts. By Dr. K. 

 Scheid. Pp. xv + 448. (Leipzig: Quelle and Meyer.) 

 10 marks. 



Probleme der phvsiologischen und pathologischen 

 Chemie. By Dr. O. von Fiirth. II. Band. Stoff- 

 wechsellehre. Pp. xiv + 717. (Leipzig: F. C. W. 

 Vogel.) 23 marks. 



Guy Maryiering, or the Astrologer. By Sir Walter 

 Scott, with Introduction and Notes by J. H. Board- 

 man. Pp. XXX + 4S2. (London : A. and C. Black.) 



2S. 



Geological Survey of New Jersey. Bulletin 8 : 

 Annual Administrative Report of the State Geologist 

 for the Year 1912, including a Second Report on 

 Shark River Inlet, by C. C. Vermeule, and a List of 

 New Bench Marks. 'Pp. 103. (Trenton, N.J. : Mao- 

 Crellish and Quigley.) 



Geological Survey of New Jersey. Bulletin 9 : A 

 Preliminary Report of the Archaeological Survey of 

 the State of New Jersey made by the Department of 

 Anthropology in the American Museum of Natural 

 History, compiled by A. Skinner and M. Schrabisch. 

 Pp. 94 + map. (Trenton, N.J. : MacCrellish and 

 Quigley.) 



Chemie, allgemeine Kristallographie und Minera- 

 logie. By E. v. Meyer, C. Engler, L. Wohler, O. 

 Wallach and others. Pp. xiv + 663. (Leipzig and 

 Berlin : B. G. Teubner.) 21 marks. 



Documents of British History, a.d. 1815-1900. By 

 M. W. Keatinge and N. L. Frazer. Pp. 77. (Lon- 

 don : A. and C. Black.) 8d. 



Recits et Compositions d'apres l'lmage. By M. 

 Anceau and E. Magee. Pp. 33+14 plates. (London : 

 A. and C. Black.) 6d. 



Zoology. By Prof. E. Brucker. Pp. xiii + 219. 

 (London : Constable and Co., Ltd.) 2s. net. 



Department of the Interior. U.S. Geological Sur- 

 vey. Mineral Resources of the United States. 

 Calendar Year 1911. Part i., Metals. Pp. 1018. 

 Part ii., Non-Metals. Pp. 1224 + maps. (VVashing- 

 ton : Government Printing Office.) 



Department of the Interior. U.S. Geological Sur- 

 vey. Water Supply Paper. 259, 293, 297, 300, 310, 

 311, 313, 316. (Washington : Government Printing 

 Office".) 



Department of the Interior. U.S. Geological Sur- 

 vey. Bulletin. 502, 503, 510, 521. (Washington : 

 Government Printing Office.) 



Mechanics and Heat. By J- Duncan. Pp. xiii + 

 381. (London : Macmillan and Co., Ltd.) 35. 6d. 



Principles and Practice of School Gardening. Bv 

 A. Logan. Pp. xv+313. CLondon : Macmillan and 

 Co., Ltd.) 3s. 6d. 



U.S. Department of Agriculture. Weather Bureau. 

 Report of the Chief of the Weather Bureau, 1911-12. 

 Pp. 272 + 4 charts. (Washington: Government Print- 

 ing Office.) 



DIARY OF SOCIETIES. 



THURSDAY, June 19. 

 Royal Society, at 4.30. — Atomic Specific Heats between the Boiling 

 Points of Liquid Nitrogen and Hydrogen. I. The Mean Atomic 

 Specific Heats at 50° Absolute of the Elements— a Periodic Function 

 of the Atomic Weights : Sir James Dewar.— An Active Modification 

 of Nitrogen produced by the Electric Discharge. V. : Hon. R. I. Strutt. 

 —The Electrical Emissivity and Disintegration of Hot Metals : Dr. 

 J. A. Harker and Dr. G. W. C. Kaye.— A Method of Measuring the 

 Viscosity of the Vapours of Volatile Liquids, with an Application to 

 Bron.ine : Dr. A. O. Rankine —The Efficiency of Selenium as .1 Detector 

 of Light : E. E. Fournier d'Alhe.— The Hall Effect in Liquid Electro- 

 lytes : A. E. Oxley.— Th- Displacements of the Particles and their Paths 

 in Some Cases of Two-dimensional Motion of a Frictionless Liquid : 

 Prof. W. B. Morton.— The Diurnal Variations of the Earth's Magnetism 

 produced bv the Moon and Sun : S. Chapman. — The Electric 'Effect of 

 Rotating a Magnetic Insulator in a Magnetic Field : Prof. H. A. Wilson 

 and Marjorie " Wilson— The Magnetic Materials in Chw 

 Hopwood.— Synthesis of the Anhydrides of a Aminoacyl Glucosamines : 

 A. Hopwood and C. Weizmann. — The Flexure of Telescope Mirror-discs 

 arising from their Weight, and its Influence upon Resolvine Power : 

 II R. fones.-(0 Fourier Series and Functions of Bounded Variation; 



(2) A Condition that a Trigonometrical Series should have a certain Form ; 



(3) Trigonometrical Series the Cesaro Partial Summations of which 

 Oscillate Finitely : Prof. W. H. Voung. 



Linnean Society, at 8.— Impressions of the Feeding-tracks of Limax 

 maximus and Hell 1 aspcrsa : Mrs. Longstaff.— African Species of the 

 Genus Lrotalarla: E. G. Baker — Aphareocaris, nom. nov. (Aphareus, 

 Paulson), a Genus of the Crustacean Family Sergestidae : Dr. W. T. 

 Caiman.— Water-colour Drawings of Australian and South African 

 Plants: Miss Fuller. — An Anatomical Sludy of the Cone-genus Lepi- 

 dostrobus : Dr. Agnes Arber. — Fresh-water Rhizopoda from North and 

 South America : G. H. Wailes.— A Revision of the Genus Symphytum, 

 Tourn. : Cedric Bucknali.— Some New British Plants: Dr. C. E. Moss. 

 MONDAY, June 23. 



Royal Geographical Society, at 8.30.— A Geographical Excursion across 

 the United States: G. Chisholm, H. O. Beckit, and A. G. Ogilvie. 

 WEDNESDAY, June 25. 



Geological Society, at S.— 1 he .Miocene Beds of the Victoria Nyanza 

 and the Geology of the Country between the Lake and the Kisii High- 

 lands : Dr. F. Oswald. 



Bkitish Astronomical Association, at 5. 



THURSDAY, June 26. 



Royal Society at 4.30.— Probable Paters: Light Sensations and the 

 Theory of Forced Vibrations : Dr. G. J. Kurch.— The Fluctuation in the 

 Ionisation due to y Rays : I'. W. Burbidge.— The Force Exerted on a 

 Magnetic Particle by a Varying Electric Field : J. G. Leathern.— The 

 Luminosity Curve of a Colour-blind Observer : Dr. W. Watson —A 

 Critical Study of Spectral Series. Part iii. The Atomic Weight Term, and 

 its Import in the Constitution of Spectra : Prof. W. M. Hicks.— A Band 

 Spectrum attributed to Carbon Monosulphide : L. C. Martin.— Phos- 

 phorescence of Mercury Vapour after Removal of the Exciting Light: 

 F. S. Phillips. And ,'tlur Fapcrs. 



FRIDAY, June 27. 



Physical Societv, at 5 



CONTENTS. page 



Mendelism and Stock-Breeding 393 



The Indexing of Chemical Literature. By J. C. C. 394 



Petrology and Building Stones 394 



Our Bookshelf 39» 



Letters to the Editor: — 



Pianoforte Touch.— Dr. Oliver Heaviside, F.R.S. 397 

 A Peripheral Effect with X-Kadiation. — W. F. D. 



Chambers ; I. G. Rankin 397 



Radium and the Evolution of the Earth's Crust. — 



Arthur Holmes ■ 398 



An Amphipod Invasion. — Dr. James Ritchie . 398 



New Zealand Vegetation. — W. B. Alexander; F. C. 399 



Anthelia. (Illustrated.)— T . W. Backhouse ... 399 

 Antennas for Wireless Telegraphy. — Arnold G. 



Hansard ; Benjamin S. T. Wallace 399 



Sub-Red Crag Flint Implements and the Ipswich 



Skeleton.— J. Reid Moir 400 



The Oxygen Content of the Atmosphere. ByT. E.T. 400 

 The Potsdam Meteorological and Magnetic Obser- 

 vatories. (Illustrated.) By Dr. C. Chree, F.R.S. . 401 

 Recent Sea-Level Variations in Japan and Italy. 



(With Diagram.) By C. D 402 



Notes 4 02 



Our Astronomical Column : — 



Observatories and Cities 406 



Neptune's Faint Equatorial Belts 407 



Variable Stars 407 



Kodaikanal Solar Prominences during 1912 407 



The Allotropy of Iron 407 



The Royal Society Conversazione 408 



Remarkable Drought in the Philippines 409 



Work of the Rothamsted Experimental Station . . 409 

 Design and Use of Scientific Instruments in Aero- 

 nautics. (With Diagram.) By Horace Darwin, 



F.R.S 410 



The Standardisation of Hydrometers ...... 412 



University and Educational Intelligence . ..... 413 



Societies and Academies 414 



Books Received 417 



Diary of Societies . . , ... 418 



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