5^2 



NATURE 



[June i6, 1921 



Hyperacoustics. By John L. Dunk. Division ii. : 

 Successive Tonality. Pp. xi+i6o. (London: J. M. 

 Dent and Sons, Ltd. ; Nevi' York : E. P. Dutton and 

 Co.) 55. net. 



Greek Medicine in Rome. The Fitzpatrick Lec- 

 tures on the History of Medicine, delivered at the 

 Royal College of Physicians of London in 1909-10, 

 with other Historical Essays. By the Right Hon. 

 Sir T. Clifford AUbutt. Pp. xiv+633. (London : 

 Macmillan and Co., Ltd.) 305. net. 



The Psychology of Industry. By Dr. James 

 Drever. Pp. xi+148. (London: Methuen and Co., 

 Ltd.) 5^. 'net. 



Motya : A Phoenician Colony in Sicily. By Joseph 

 L S. Whitaker. Pp. xvi+357. (London : G. Bell 

 and Sons, Ltd.) 30s. net. 



Diary of Societies. 



THURSDAY, Jtjne 16. 



Institute of Pathologi and Kdseabch (at St. Mary's Hospital), 

 at 4.30. — Prof. VV. Bulloch : Use and Abuse of tioientiiic Medical 

 Literature. 



Eoyal bociETi, at 4.30.— Prof. H. B. Dixon, Dr. C. Camp- 

 bell, and Dr. A. Parker : The Velocity of Sound in Oases 

 at High Temperatures, and the Ratio of the bpeciflo Heats. — 

 Prof. J. B. Partington : The Ratio of the Speoilic Heats of Air and 

 of Uarbon Dioxide. — Dr. A. B. Wood and Dr. P. B. Young: 

 " Light Body '* Hydrophones and the Directional Properties of 

 Microphones.— Dr. A. B. Wood and Dr. P. B. Young: The Acous- 

 tic Disturbances produced by Small Bodies in Plane Wares 

 transmitted through Water, with Special Reference to the Single 

 Plate Direction Finder. — M. A. Oiblett : Some Problems connected 

 with Evaporation from Large Expanses of Water.— P. C. Toy : 

 The Photographic Efficiency of Heterogeneous Light. 



LiNNEAN Society, at 5.— Dr. N. Annandale : The Vegetation of an 

 Island in Chilka Lake on the East Coast of India, considered 

 as a Preliminary to a Study of its Fauna.— Col. Godfery : The 

 Fertilisation of Cephalanthera. 



Royal (Jollegb or Physicians of London, at 5.— Dr. F. L. Golla : 

 The Objective Study of Neurosis (Crooaian Lecture). 



Royal Society or Medicine (Dermatology Section), at 5. 



Chemical SocreTi (at Institution of Mechanical Engineers), at 

 8. — Prof. B. Moore : The Natural Photo-synthetic Processes on 

 Land and in Sea and Air, and their Relation to the Origin 

 and Preservation of Life upon the Earth (Hugo Miiller Lec- 

 ture) . 



ROntgen Society (at Royal Photographic Society), at 8.15.— Major 

 G. W. C. Kaye and Others : Discussion on the Physics of the 

 X-ray Tube.— Exhibition of Modern X-ray Tubes.— British 

 Thomson-Houston Co., Ltd. : Demonstration of New Portable 

 Coolidge Outfit. 



Royal Photographic Society of Great Beitain, at 8.15.— Lec- 

 ture. 



Royal Society of Medicine (General Meeting), at 8.30.— Sir Thomas 

 Horder, Dr. G. C. Anderson. Mr. Clayton-Greene, W. S. Dickie, 

 B. Harman, Dr. A. F. Hurst, Dr. Drury Pennington, Sir 

 Humphry Rolleston, Dr. Gilbert Scott, and Dr. M. Wright : The 

 Problem of the Private Clinic System in Great Britain. 



FRIDAY. Juint 17. 



Royal Astronomical Society, Geophysical Discussion, at 5.— 

 Changes of Level in the British Isles, opened by H. L. P. Jolly, 

 followed by Col. Sir C. F. Close and O. G. 8. Crawford. Chair- 

 man : Col. Sir G. Lenox-Conyngham. 



Royal Society of Tropical Medicine and Hygiene (Annual Meet- 

 ing), at 8.15.— Major R. Knowles : The Mechanism and Treatment 

 of Snake-bite in India. 



Royal Photographic Society of Great Britain, at 8.— J. C. 

 Warburg : Foregrounds. 



West London Medico-Chirtjbgical Society (at Kensington Town 

 Hall), at 8.15.— Dr. C. Addison: The Part of the State in the 

 Prevention of Disease (Cavendish Lecture). 



Royal Institution of Great Britain, at 9.— Sir J. J. Thomson: 

 Chemical Combination and the Structure of the Molecule. 



MONDAY, June 20. 

 Royal Society of Medicine, at 5.— Special General Meeting. 

 Royal Institute of British Architects, at 8. 



Royal Geographical Society (at ^olian Hall), at 8.30.— Dr. W. F. 

 Hume : The Egyptian AVilderness. 



TUESDAY, June 21. 



Royal Horticultural Society, at 3. 



Royal College of Physicians of London, at 5.— Dr. P. L. Golla : 

 The Objective Study of Neurosis (Croonian Lecture). 



Royal Society of jMedicine (General Meeting), at 5. 



Royal Statistical Society (at Surveyors' Institution), at 5.15.— 

 Mrs. "W. J. Barton : W'omen's Minimum Wages. 



Mineralogical Society (at Geological Society), at 5.30.— Prof. H. 



. Hilton : Note on Crystal Measurement.— A. Brammall : Recon- 

 struction Processes in Shalos, Slates, and Phyllites.— A. Richard- 

 son : The Micro-petrography of the Rock-gypsum of Notting- 

 hamshire. 



WEDNESDAY, June 22. 



Geological Society of London, at 5.30.— F. Dixey : The Norite of 

 Sierra Leone. — Dr. C. T. Trechmann and F. L. Spath : The 

 Jurassic of New Zealand. 



Faraday Society (at Chemical Society), at 8.— C. J. Smithells : ' 

 High Temperature Phenomena of Tungsten Filaments. — E. 

 Hatsohek : A Simple Apparatus for Determining the Coagulations 

 Velocity of Gold Sols.— Prof . ^. W. Porter : Variation of Surface 

 Tension with Temperature. — S. M. Neale : The Influence of the 

 Solvent upon lonisation and the accompanying Heat Effect. — 

 A. McKeown : The Potential of the Iodine Electrode and the 

 Activity of the Iodine Ion at 25° C. — E. Eilburn Scott : Demon- 

 stration of the Transmission of Sounds by means of Rochelle 

 Salt Crystals. 



THURSDAY, June 23. 



Royal Society, at i.30.— Probable Papers.— Di. E. F. Armstrong and 

 T. P. Hilditch : A Study of Catalytic Actions at Solid Sur- 

 faces. VI. Surface Area and Specific Nature of a Catalyst : 

 Two Independent Factors controlling the Resultant Activity. — 

 Sir J. B. Henderson : A Contribution to the Thermodynamical 

 Theory of Explosions, Part I.; and (with Prof. H. R. Hasse) 

 Part II. — S. Butterworth : Eddy Current Losses in Cylindrical 

 Conductors, with Special Applications to the Alternating-current 

 Resistances of Short Coils. — E. S. Bieler : The Currents induced 

 in a Cable by the Passage of a Mass of Magnetic Material 

 over it. — Dr. G. Barlow and Dr. H. B. Keene : The Experimental 

 Analysis of Sound in Air and Water : Som« Experiments towards 

 a Sound Spectrum. — Dr. G. Barlow : The Theory of Analysis of 

 an Electric Current by Periodic Interruption. 



FRIDAY, June 24. 

 Physical Society of London (at Imperial College "of Science), 

 at 5. — S. Butterworth : Capacity and Eddy-current Effects in 

 Induotometers.— Dr. E. Griffiths : New Specific Heat Apparatus. — 

 Prof. A. O. Rankine : Encounters between Non-spherical Gas 

 Molecules. — Dr. C. Chree : An Electro-culture Problem. 



MONDAY, June 27. 

 Royal Society of Medicine (Odontology Section), at 8.— K. Fry: 

 The Dental Treatment of Congenital and Other Perforations of 

 the Palate. 



TUESDAY, Jtine 28. 

 Royal Anthropological Institute, at 8.16. — L. H. Dudley Bustcn : 

 The Ancient and Modern Inhabitants of Malta. 



CONTENTS PAGE 



The Safeguarding of Research 481 



Steam and Thermodynamic Theory. By Sir J. A. 



Ewing, K.C.B., F.R.S . . 482 



Ore Deposits of Utah 484 



Medical Science and Practice 484 



Our Bookshelf 485 



Letters to the Editor:— 



Human and Other Tails. — Prof. F. Wood Jones ; 



Sir Arthur Keith, F.R.S 487 



The Stationary H- and K-lines of Calcium in Stellar 



Atmospheres.— Prof. Megh Nad Saha .... 488 



Biological Terminology.— Dr. F. A. Bather, F.R.S. 489 

 A New Acoustical Phenomenon. — Dr. J. Erskine- 



Murray . . 49° 



Herons and Fish. — Right Hon. Sir Herbert 



Maxwell, Bart., F.R.S 490 



Why do Worms t>ie ?— W. J. Lewis Abbott ; J. H. 



Coste .... ....." • . . 490 



Vitality of Gorse-seed. — John Parkin , . . 491 



Habits of the Hedgehog. — Dr. G. A. Auden . . . 491 

 Principles of Picture-hanging. — Sir G. Greenhill, 



F.R.S. 491 



Oersted — the Discoverer of Electro-magnetism. 



By R. T. G 492 



Native Life in the Loyalty Islands and Southern 



Nigeria. {Ilhistrated.) By Henry Balfour ... 495 

 Obituary: — 



Peter Donald Malloch. By W. C. M 498 



Notes 499 



Our Astronomical Column : — 



Dr. Hill's Cusped Orbit 503 



Stonyhurst College Observatory 503 



" L' Astronomic et les A stronomes " 5^3 



Prof. Einstein's Lectures at King's . College, 



London, and the University of Manchester . 504 

 Physico-chemical Problems Relating to the Soil. 



By B. A. K. . . 504 



British Science Guild : Notable Views on Present- 

 day Problems • 5^5 



University and Educational Intelligence . ... 507 



Calendar of Scientific Pioneers . 508 



Societies and Academies ....... .... 509 



Books Received 5^1 



Diary of Societies ... • 5-^2 



NO. 2694, VOL. 107] 



