632 



NA TURE 



[May 13, 1922 



soddite is proposed for the mineral. — J. Thoulet : 

 Deep submarine volcanic eruptions. Evidence of 

 submarine eruptions furnished by deep-sea soundings 

 near the Canaries and the Azores. — R. Soueges : The 

 embryogeny of the Rosacea;. The first stages of the 

 development of the embryo in Geum urbanum. — 

 M. and Mme. F. Moreau : Mycelium with protuber- 

 ances found in the Ascomycetes. — J. Stoklasa : The in- 

 fluence of selenium and of radium on the germination 

 of seeds. Both sodium selenate and selenite exert a 

 toxic action on the development of seeds, the latter 

 possessing the most marked effect. This toxic effect 

 is partially neutralised if radioactive substances are 

 present at the same time. — R. Argaud : The intra- 

 nucleolar presence of the centrosome. — A. Lumiere 

 and J. Chevrotier : Antityphoid vaccination by 

 scarification. As an alternative to vaccination by 

 the mouth, which as yet has not been fully accepted, 

 trials have been made of a process of immunisation 

 by scarification. This method is free from the 

 troublesome reactions caused by direct injection, but 

 the immunity conferred is not quite complete. — 

 MM. Cohendy and E. Wollman: Some results obtained 

 by the method of growth under aseptic conditions. 

 Experimental scurvy. Infection of the aseptic 

 guinea-pig by cholera. — L. Corbiere and A. Chevalier : 

 The origin of Spartina Townsendi and its role in the 

 fixation of marine mud. 



Diary of Societies. 



FRIDAY, May 12. 



KOYAL Astronomical Society, at 



A Method of 



determining Pliotographlc Star Magnitudes without the Use of 

 Screens or Gratings. — J. Halm : The Rotation of the Sun's Reversing 

 Layer.— J. Evershed : Widened Lines in the Spectrum of Sirius.— 

 A. Stanley Williams : Two Variable Stars in Gemini.— A. Stanley 

 Williams: A Probably Variable Star in Gemini.— A. Stanley 

 Williams : The Tawny Hue of Jupiter's Equatorial Belt. — A. N. 

 Brown : Observations of RT Cygni (Ch. 7085) in 1917-22.— W. H. 

 Steavenson : Observations of Nova Persei (1901) in 1921-22. 



Physical Society of London (at Imperial College of Science and 

 Technology), at 5.— S. O. Pearson and H. St. G. Anson : Demonstra- 

 tion of Some Electrical Properties of Neon-filled Lamps.— -Dr. A. 

 Griffiths and W. T. Heys : A New Apparatus for the Measurement 

 of the Polarisation Capacity of Platinum Plates in Sulphiu-ic Acid. — 

 Dr. H. Chatley : The Molecular Forces involved in Cohesion. 



ROYAL Society of Medicine (Clinical Section), at 5.30.— Annual 

 General Meeting. 



Junior Institution of Engineers (at Institution of Mechanical 

 Engineers), at 7.30. — L. A. Legros : Tanks and Chain Track 

 Artillery. 



Malacological Society of London (at Linnean Society). 



Royal Institution of Great Britain, at 9.— Dr. H. H. Dale : The 

 Search for Specific Remedies. 



SATURDAY, May 13. 

 Royal Institution of Great Britain, at 3. — Prof. O. W. Richardson : 

 The Disappearing Gap between thfe X-ray and Ultra-violet Spectra. 

 I. Grating Results. 



MONDAY, Uax\^. 

 Royal Geographical Society (at Lowther Lodge, Kensington Gore), 



at 5.— E. A. Reeves : The Evidence of a True North and South 



Directive Force in the Atmosphere. 

 Aristotelian Society (at University of London Club, 21 Gower 



Street, W.C.I), at 8.— Prof. T. P. Nunn, and others : Discussion on 



Prof. Whitehead's " Enquiry " and " Concept of Nature." 

 Royal Society of Arts, at 8.— F. F. Renwick : Modern Aspects of 



Photography (3) (Cobb Lectures). 

 Royal Institute of British Architects, at 8.— J. A. Gotch : The 



First Half-century of the R.I.B.4. 



TUESDAY, Mky If,. 

 Royal Institution of Great Britain, nt 3. — Prof. W. Bulloch: 



Tyndall's Biological Researches and the Foundations of Bacteriology 



(Tyndall Lectures) (I.). 

 Royal Society of Medicine (General Meeting of Fellows), at 5. 

 Royal Statistical Society, at 5.15. 

 Royal Photographic Society of Great Britain, at 7.— J. F. 



Shepherd : Natural Colour Photography. 



WEDNESDAY, May 17. 

 Royal Meteorological Society, at 5.— Dr. A. E. M. Geddes : Weather 

 and the Crop- Yield in the North- East Counties of Scotland, followed 

 by a general discussion on R. H. Hooker's Presidential Address, The 

 Weather and the Crops in Eastern England, 1885-1921.— Dr. H. P. 

 Waran : A New Form of Direct-reading Barometer. 



Royal Society of Medicine (Siurgcry Section), at 5.30. — Annual 

 General Meeting. 



Royal Microscopical Society, at 8. — Annual Exhibition of Micro- 

 scopic Pond lAfe. 



THURSDAY, MAY 18. 



Royal Institution of Great Britain, at 3. — Prof. F. Keeble : 

 Plant Sensitiveness (II.), To Contact and to Chemical Stimulation. 



Royal Society, at 4.30. — Probable Papers. — Prof. T. B. Wood and 

 Dr. J. W. Capstick : The Progress of Metabolism after Food in 

 Swine. — C. G. Lamb : The Geometry of Insect Pairing. — G. E. 

 Briggs : Experimental Researches on Vegetable Assimilation and 



- Respiration. XV. The Development of Photosynthetic Activity 

 during Germination of Different Types of Seeds.— G. E. Briggs : 

 L.xperimental Researches on Vegetable Assimilation and Respira- 

 tion. XVI. The Characteristics of Sub-normal Photosynthetic 

 Activity resulting from Deficiency of Nutrient Salts. — J. A. Gardner 

 and F. W. Fox : The Origin and Destiny of Cholesterol in the Animal 

 Organism. Part 13. The Autolysis of Liver and Spleen. 



Royal Society of Medicine (Dermatology Section), at 5.— Annual 

 General Meeting. 



Institution of Mining and Metallurgy (at Geological Society), at 

 5.30. 



Institution of Electrical Engineers, at 6. — Sir Ernest Rutherford : 

 Electricity and Matter (Kelvin Lecture). 



Institution of Automobile Engineers (London Graduates' Meeting), 

 at 8. —P. H. Hardy and L. B. Harris : Electrical Equipment. 



Chemical society, at 8, followed by an Informal Meeting. 



FRIDAY, MAY 19. 



Association of Economic Biologists (in Botanical Lecture Theatre, 



Imperial College of Science and Technology), at 2.30. — W. Rushton : 



Further Contributions to the Biology of Freshwater Fishes. — Prof. 



J. H. Priestley : Toxic Action of Illuminating Gas on Plants (with 



Demonstration). 

 Royal Society op Medicine (Otology Section), at 5. — Annual General 



Meeting. 

 Institution of Electrical Engineers (London Students' Section) 



(Annual General Meeting), at 7. — A. H. Reeves : The PJlimination 



of Atmospherics in Radio-telegraphy. 

 Royal Institution of Great Britain, at 9. -Sir William Bragg: 



The Structure of Organic Crystals. 



SATURDAY, MAY 20. 

 Royal Institution of Great Britain, at 3. — Prof. O. W. Richardson : 

 The Disappearing Gap between the X-ray and Ultra-violet Spectra. 

 II. Photo-electric Metliods. 



PUBLIC LECTURES. 



{A number in brackets indicates the number of a lecture in a series.) 



FRIDAY, May 12. 



London School of Economics, at 5. — Dr. P. Giles : Modern Views 



of Indo-European Origins (1). 

 University College, at 5.15. — A. E. M. van der Meersch : Simplified 



Solutions for B.M. and S.F. Values for Rolling Loads (1) ; — at 5.30. — 



Prof. W. R. Shepherd : The Expansion of European Civilisation (2). 

 BiRKBECK College, at 6. — Dr. E. J. Russell : Recent Work with 



regard to the Influence of Soil Conditions on Agriculture (1). 

 Gresham College, at 6. — A. R. Hinks : Astronomy (4) (Gresham 



Lectures), 



TUESDAY, May 16. 

 University College, at 5. — Sir Arthur Shipley : Insects' and Disease 



(3). 

 King's College, at 5.30. — Prof. H. Wildon Carr : The Principle and 



Method of Hegel (3) : The Philosophical Sciences. 

 Gresham College, at C — Sir Robert Armstrong-Jones : Physic (1) 



(Gresham Lectures). 



WEDNESDAY, MAY IJ. 



School of Oriental Studies, at 5. — Dr. R. A. Nicholson : The Idea 

 of Personality in Suflsm (1). 



University College, at 5.15.— Dr. D. H. Scott : The Early History 

 of the Land Flora (4). 



King's College, at 5. — Dr. A. Harker : Tertiary Igneous Action in 

 Britain (1) ;— -at 5.30. — Prof. J. F. Van Bemmelen : The Morpho- 

 logical Character of the Skin Pattern in Insects and Mammals. 



Gresham College, at 6. — Sir Robert Armstrong-Jones : Physic (2) 

 (Gresham Lectures). 



THURSDAY, MAY 18. 

 University College, at 2.30. — Prof. W. M. Flinders Petrie : Recent 



Discoveries in Egypt (1) ; — at 5.15. — Sir Joseph J. Thomson : Atoms, 



Molecules, and Chemistry (3). 

 St. Mary's Hospital (Institute of Pathology and Research), at 5.— 



Major-Genl. Sir W. B. Leishman : Enteric Fevers in the War. 

 Gresham College, at 6. — Sir Robert Armstrong - Jones : Physic (3) 



(Gresham Lectures). 



FRIDAY, MAY 19. 

 London School of Economics, at 5. — Dr. P. Giles : Modern Views of 



Indo-European Origins (2). 

 University College, at 5.15. — A. E. M. van der Meersch: Simpufied 



Solutions for B.M. and S.F. Values for Rolling Loads (2) ;— at 5.30. 



— Prof. W. R. Shepherd : The Expansion of European Civilisation 



BiRKBECK College, at 6.— Dr. E. J. Russell : Recent Work with 

 regard to the Influence of Soil Conditions on Agriculture (2). 



Gresham College, at 6.— Sir Robert Armstrong-Jones : Physic (4) 

 (Gresham Lectures). 



NO. 2741, VOL. 109] 



