670 



NATURE 



[February 10, 19 16 



the McClean Solar Instruments. By J. B. Hubrecht. 

 Pp. 77. (Cambridge : At the University Press.) 9s. 

 net. 



Heaton's Annual. Twelfth Year. Pp. 463. 

 (Toronto : Heaton's Agency.) 55. 



Canada. Department of Mines. Geological Sur- 

 vey. Memoir 80. Huron and Wyandot Mythology. 

 By C. M. Barbeau. Pp. xiv + 415 + xi plates. 

 (Ottawa : Government Printing Bureau.) 



The Theory of Abstract Ethics. By T. Whittaker. 

 Pp. viii+126. (Cambridge: At the University Press.) 

 45. 6d. net. 



An Introductory Course of Practical Magnetism and 

 Electricity. By Dr. J. R. Ashworth. Third edition. 

 Pp. xvii + 96. (London: Whittaker and Co.) 2s. 

 net. 



The Journal of the Institute of Metals. Vol. xiv., 

 No. 2. Pp. ix + 289. (London : Institute of Metals.) 

 21S. net. 



Forty-fourth Annual Report of the Local Govern- 

 ment Board, 1914-15. Supplement containing the Re- 

 port of the Medical Officer for 1914-15. Pp. xxxiv + 

 100. (London : H.M.S.O. ; Wyman and Sons, Ltd.) 



Proceedings of the Liverpool Geological Society. 

 Cape Memorial Volume : On the Igneous and Pyro- 

 clastic Rocks of the Berwvn Hills (North Wales). Bv 

 the late T. H. Cope. Pp. "115. (Liverpool : C. Tinling 

 and Co., Ltd.) 



Ray Societv. The British Marine Annelids. Vol. 

 iii., part ii. Plates. Polychaeta — Opheliidae to Ammo- 

 charidae. By Prof. W. C. Mcintosh. Plates Ixxxviii- 

 cxi. (London : Dulau and Co., Ltd.) 25s. net. 



Memoirs of the Indian Museum. Vol v.. No. 3, 

 December. Fauna of the Chilka Lake. Crustacea 

 Decapoda. By S. Kemp. Pp. 199-325. (Calcutta : 

 Indian Mviseum.) 9 rupees. 



Board of Education. Examinations in Science and 

 Technology, 1915. Examination Papers and Reports 

 of Examiners. Pp. 140. (London: H.M.S.O.; 

 Wyman and Sons, Ltd.) 9^. 



A Critical Revision of the Genus Eucalyptus. By 

 J. H. Maiden. Vol. iii., part 4. Pp. 63-79. (Syd- 

 ney : W. A. Gullick.) 2.v. 6d. 



DIARY OF SOCIETIES. 



THURSDAY, February 10. 



RovAL Society, at 4.30.— The Theory of the Helmholtz Resonator : Lord 



L Raylelgh.— The Oxyhylroeen Flame Spectrum of Iron : Sir N. Lockyer 

 and H. F,. Goodson. — The Consumption of Carbon in the Electric Arc. 

 III. The Anode Loss: W. G. D ffield and M. D. Wall r— Surface 

 Friction. Experiments with Stfam and Water in Pipes : C. H. Lander.— 

 The Structure of Broadened Spectrum Lines : T. R. Merton. 



Royal Institution, at 3.— Measurement of the Brightness of Stars; 

 Visual and Photographic Magnitudes : Sir F. W. Oyson. 



Institittion of Electrical Engineers, at 8.— The Testing of Under- 

 ground Cables wiih C.mtinuous Current : O. L. Record. 



Optical Society, at 8.— Optical or Visual Signallmg : Dr. W. J. Ettles. 



Mathematical Society, at 5.30. — (1) Theorems on Straight Lines Inter- 

 secting at Right Angles; (2) The Classification of Rational Approxima- 

 tions: J. H. Grace.— Infinite Derivates : Mrs. G. C. Young,— The 

 Bilinear Curvature and other Functions of Independent Directions on a 

 Surface : E. H. Neville.— The Attraction of Equiangular Spirals : Dr. 

 Brodetsky. 



FRIDAY, February ii. 



Royal Institution, at 5.30.— Egyptian Jewelry : Prof. W. M. Flinders 

 Petrie. 



Royal Astronowical Society, at 5.- Annual General Meeting. 



Physical Society, at 5.— A General Bridge Method for Comparing the 

 Mutual Inductance between Two Coils with the Self Inductance of one 

 of them : Prof. C. H. Lees. — An Enclosed Cadmium-Vapour Arc Lamp : 

 Dr. H.J. S. Sand, D.Sc. 



MONDAY, Februarv 14. 



Royal Society of Arts, at 4.30.— Flemish Architecture: Rev. Dr. H. 

 West. 



TUESDAY, February 15. 



Royal Institution, at 3.— Nerve Tone and Posture : Prof. C. S. Sher- 

 rington. 



Royal Statistical Society, at 5.15. 



Institution of Petroleum Technologists, at 8.— Oil Shales, especially 

 those of Dorsetshire : W. Hardy Manfield. 



NO 



. 2415, VOL. 96] 



WEDNESDAY February 16. 



Royal Society of Arts, at 4.30.— Women's Work During and After the 

 War : The Hon. Lady Parsons. 



RoYAi. Microscopical Societv, at 8.— The Progress and Development of 

 Vision and Definition under the Microscope : Messrs. Heron- AUen 

 ■ Earland, and Rousselet. — An Experiment with the Ultra-microscope : 

 J. E. Barnard. 



Royal Meteorological Society, at 7.30.— The Rainfall of Nigeria and 

 the Gold Coast : C. E. P. Brooks.— South African Coast Temperatures : 

 Dr. J. R. Sutton. 



THURSDAY, February 17. 



Royal Society, at ^.y^.— Probable Papers: The Action of Cobra Venom : 

 Prof. A. R. Cushny and S. Vagi.— Gamtrtogen' sis and Sex Determination 

 in the Gall-fly, Neurotcrus lenticularis. III.: L. Doncaster. — The 

 Structure and Development of the Skull and Laryngeal Cartilages of 

 Perameles, wiih Noies on the Cranial Nerves: Philippe C. Esdaile.— , 

 Physiological Investigations with Petiole-Pulvinus Preparation of Mimosa- 

 Pudica: J. C. Bose and S. C. Das. 



Royal Institution, at 3.— Variable Stars: Sir F. W. Dyson. 



RoYAi. Geographical Society, at 5.— A Synthetic Method of Determining 

 Geographical Regions : Dr. J. F. Unstead. 



Institution of Electrical Engineers, at 8.— Kelvin Lecture; Terres-. 

 trial Magnetism : Dr. C. Chree. 



Royal So(iety of Arts, at 4.30.— The Saints of Pandharpur: C. A. 

 Kincaid, C.V.O. 



LiNNEAN Society, at s- — John Bartram ; the Pioneer American Botanist : 

 Miss C. Herring-Hrowne.— Acotn Producing Twin Plants: Miss M. 

 Rathbone.— Winter and Summer Coloration of the Ermine, Putorius^ 

 ermifieus: E. S. Goodrich. — The Infestation of Bamboos in Tidal Waters 

 by Balanus amphitrite and Teredo navaiis in Tenasserim : E. P. 

 Stebbing. 



FRIDAY, February 18. 



Royal Institution, at 5.30.— Polarised Light and its Application to- 

 Engineering : Prof E. G. Coker. 



Institution of MechanicalEngineers, at 8.— Annual General Meeting. 



CONTENTS. PAGE 



Defects and Remedies 643 



Psychology. By Dr. Robert Armstrong-Jones . . . 644 

 The Energy Changes in Vital Processes. By 



T. H. M 646 



A Handbook for Wireless Telegraphists 647 



Our Bookshelf 64S 



Letters to the Editor:— 



Latin as a Universal Language. — Sir Lauder 



Brunton, Bart., F.R.S, ... 649 



Belgian Soldiers in Holland.— Prof. William Somer- %^.,.-. 



vilie; Prof. Frederick Keeble, F.R.S. . . . 649 



Germany's Aims and Methods. — Rev. Dr. A. Irving 650 



Instruction in Science for Military Purposes. — 



Chas. R. Darling . . ... 650 



A Land of Dilemma. {Illustrated.) By J. W. G. . . 651 



Optical Instruments and the Ministry of Munitions 652 



The South African Sea-Fisheries. By J. J. ... 653 



New Antiseptics 653 



Notes 654 



Our Astronomical Column :— 



Astronomical Occurrences 659 



Shifts of Wave-lengths 659 



Furnace Spectra of Cobalt and Nickel 659 



The Elfctro-Thermic Smelting of Iron Ores. By 



Prof. H. C. H. Carpenter 659 



Geological Work in Canada. By G. A. J. C. . . . 660 

 Chemists and Manufacturers. By A. Chaston 



Chapman 662 



Science and British Trade 663 



University and Educational Intelligence 665. 



Societies and Academies 667 



Books Received 669 



Diary of Societies 670 



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