400 



NATURE 



[January 17, 19 18 



.g.enation of aniline. The crude mixture to be separated 

 contains cycZohexylamine, dic3'/:iohexylamine, cycla- 

 hexylaniline, diphenylamine, and some secondary pro- 

 ducts, benzene, cyciohexane, and tar. A scheme is 

 given for the separation and isolation of the above 

 amines,— G. F. Dollfus : Geological observations made 

 in the neighbourhood of Honfleur (Cglvados). — L. 

 Dunayer and G. Reboul : The diurnal variations of the 

 wind in altitude. — C. Gessard : An erythrogenic variety 

 of the pyocyanic bacillus. — M. Belin : A new method 

 of general chemicotheraoy : oxidotherapy. A descrip- 

 tion of results obtained by the injection of solutions 

 of potassium permanganate in tetanus, typhoid fever, 

 acute rheumatism, and other diseases. 

 Petrograd. 

 Academy of Sciences, September 13, 1917. — E. E. 

 Kostyieva : The forms of corrosion of topaz crystals 

 from Sajtanka (Oural).— N. N. Adelung : Contributions 

 to our knowledge of the Palaearctic Blattoidea. II. : 

 Supplementarv notes on Ectobiella duskei, Adel. — A. P. 

 Semenov-Tian-^anskij : Preliminary synopsis of the 

 Mydaidae of the Russian fauna (Diptera). — V. K. 

 So'ldatov : New genus of Zoarcidae — Gymnelopsis, 

 n.gen., and G. ocellatus, G. brashnikovi, Lycenchelis 

 armatus, nn.spp., from the Okhotsk Sea. — N. M. 

 Krylov and Ja. D. Tamarkin : The method of W. Ritz 

 for the approximate solution of problems of mathe- 

 matical physics. — ^P. P. Lazarev : The laws of transi- 

 tory illumination of the retina in peripheral vision. — 

 A. BaCinskij : Molecular fields and their extent. — M. 

 Kasterin : The inconsistency of Einstein's principle of 

 relativity. — N. V. Nasonov : The fauna of the Turbellaria 

 of Finland. — I. N. Filipiev : Instructions for collecting 

 free-living nematodes. — V. N. Ipatiev and V. Verchov- 

 ■skij : The solution of zinc in hydrochloric acid under 

 "high pressure. 



BOOKS RECEIVED. 



A Critical Revision of the Genus Eucalyptus. By 

 J. H. Maiden. Vol. iv., part 2. (Sydney: W. A. 

 Gullick.) 2s. 6d. 



Australasian .-Xntarctic Expedition, 1911-14. Scien- 

 tific Reports, Series C. Zoology and Botany. Vol. iv., 

 part 2. Cephalopoda. By S. S. Berry. Vol v., 

 part I. Arachnida from Macquarie Island. By W. J. 

 Rainbow. (Adelaide : R. E. E. Rogers.) is. and 

 3.s\ 6d. respectively. 



-A Short Course in Elementary Mathematics and 

 their Application to Wireless Telegraphy. By S. J. 

 "Willis. Pp. 182. (London: Wireless" Press, Ltd.) 

 3s-. 6rf. net. 



Britain's Heritage of Science. Bv A. Schuster and 

 A. E. Shipley. Pp. XV+334 + illustrations. (London: 

 Constable and Co., Ltd.) 85. 6d. net. 



The Linacre Lecture on the Law of the Heart. By 

 Prof, E. H. Starling. Pp. 27, (London : Longmans 

 Tind Co.) IS. 6d. net. 



DIARY OF SOCIETIES. 



THURSDAY, Ianuarv 17. 



LiNNEAN Society, at 5.— (i) Restoration of the Head of Osteolepis; (2) 

 Femur of Pterodactyl from the Stonesfield Slate : E. S. Goodrich.— Some 

 Early Cape Botanists : J. Britten.— A Hybrid Stachys : C. E. Salmon. 



Institution of Mining and Mfi ai.lurgy, at 5.^0.— The Incidence of 

 Taxation upon Metalliferous Mining in the British Isles: H. Louis.— 

 Molybdenum in Norway : E. R. Wonke*. 



Mathematical Society, at s.— A Method or Studying any Convergent 

 Series : Major P. A. MacMahon.— Additional Note on Dirichlet's Divisor 

 Problem : G H. HarHy.— Note on a Diophantine Inequality : J. H. 

 Grace.— Supernormal Curves : C. H. Forsyth.— A Note on a Theorem of 

 Mr. Hardy's : K. Amanda Ran.— Plane Quartic Curves with a Tacnode : 

 Prof. H. Hilton and Mi.ss D. S. Tuck. 



Chemical Society, at 8.— The Svnthesis of Ammonia at Hieh Tempera- 

 tures : E. B. Maxted. — Interactions of Formaldehyde with Urea : A. E. 

 Dixon. — The Colotirinp- Matters of Camwood. Barwood, and Sanders- 

 wood : P. O'Neill and A. G. Perkin.— Studies on the Waldcn Inversion. 

 VII. The Influence of the Solvent on the Sign of the Product in the Con- 



version of /3-Phenyl-a-broniopropionic Acid to /3-Phonyl-a-aminopropionic 

 Acid (Phenylalanine) : G. Senter, H. D. K. Drew, and G. H. Martin.^ 

 Pure Piperiduie Nitrate: A. K. Macbeth.— The Chemistry of Slightly 

 Soluble Compounds of Thorium, as Investigated by Radio-active Methods : 

 W. T. Spizine. 



Royal Society of Arts, at 4.30. — The Tata Iron and Steel Works : H. M. 

 Surtees 1 uckwell. 



FRIDAY, January i8. 



Royal Institution, at 5,30.— Studies on Liquid Films : Sir James Dew^ii. 



Institution of Mechanical Engineers, at 6. — Traction on Bad Roruu 

 or Land: L. A. Legros. — Utility of Motor Tractors for Tillage Purposes : 

 A. Amos. 



SATURDAY, January 19. 



Roval Institution, at 3. — The Chemical Action of Light : Prof. W. J. 

 Pope. 



MONDAY, January 21 



Aristotelian Society, at 8.— The Category of Action in Indian Philo- 

 sophy and its Value for Modern Thinking : Dr. F. W. Thomas. 



Royal Geogkafhical Society, at 5. — Discussion : Study of a Dune Belt: 

 W. J. Harding King. 



Royal Society of Arts, at 4.30. — High-temperature Processes and Pro- 

 ducts : C. R. Darling. 



TUESDAY, January 22. 



Royal Institution, at 3. — Palestine and Mesopotamia : Prof. Flinders 

 Petrie. 



Institution of Civil Engineers, at 5.30. — Further Discussion : Rail- 

 creep: F. Recves.—Creepof Kails: H. P. Miles. 



WEDNESDAY, January 23. 



Geological Sociktv, at 5.30. 



Royal Society of Arts, .at 4.30. — Water Power in Great Britain (with 

 Special -Reference to Scotland); Its Amount and Economic Value: 

 Alexander Newlands. 



THURSDAY, January 24. 



Royal Society, at 4.30. — Probable Papers : Grajihical Solution f.ir High- 

 angle Fire: Prof. A. N. \yhitehead.— Flocculation : Spencer Pickering. 

 — Revolving Fluid in the Atmosphere: Dr. J. Aitken. -Ultra-violet 

 Transparency of the Lower Atmosphere and its Relative Poverty in 

 Ozone : Hon. R. J. Sirutt.— The Pressure in the Solar Spectrum of the 

 Water-vapour Band A 3064 : Prof. A. Fowler.— The Ultra-violet Band of 

 Anmonia and its Occurrence in the Solar Spectrum : Prof. \. Fowler and 

 C. C. L. Gregory. 



Institution of Electrical Engineers, at 6. — Telephone Exchange 

 Transfers and their Organisation : F. G. C Baldwin. 

 FRIDAY, January 25. 



Royal In.stitution, at 5.30. — The Motion of Electrons in Gases: Pr9f. 

 J. S. Townsend. 



SATURDAY, ]^s^^^K^! 26. 



Royal Institution, at 3.— 'I'he Chemical Action of Light : Prof. W. J. 

 Pope. 



CONTENTS. p.\GE 



Manuals for the Chemical Laboratory. By C. S. . 381 



Increase of Agricultural Output 382 



Sir Clements Maikham. By T. H. H 383 



Our Bookshelf 383 



Letters to the Editor:— 



Sources of Potash.— Right Hon. Sir Herbert 



Maxwell, Bart., F.R.S 384 



The Supposed " Fascination " of Birds by Snakes. — 



Prof, fidwaid B, Poulton, F.R.S 385 



The Scientific Basis of Rationing. By M. G. . . . 385 

 Scientific Work of the Medical Research Com- 

 mittee. By Prof. W. M. Bayhss, F.R.S 387 



Science and Industry in Australia 388 



Notes 389 



Our Astronomical Column :— 



The Masses of the Stars 393 



The Spectrum of a Canum Venaticorum 393 



The Society for Practical Astronomy ....... 394 



Butter Substitutes. By E. H 394 



Sea-pens of the " Siboga " Expedition 394 



Experimental Hydraulics 395 



Astronomical Consequences of the Electrical 



Theory of Matter. By Sir Oliver Lodge, F.R.S. 395 



University and Educational Intelligence 398 



Societies and Academies 399 



Books Received 400 



Diary of Societies ... 400 



Editorial and Publishing Offices: 



MACMILLAN AND CO., Ltd., 



ST. MARTIN'S STREET, LONDON, W.C.2. 



Advertisements and business letters to be addressed to the 

 Publishers. 



Editorial Communications to the Editor. 

 Telegraphic Address : Phusis, London. 

 Telephone Number : Gerrard 8830. 



NO. 2516, VOL. 100] 



