196 



NATURE 



[February 9, 192: 



THURSDAY, Febeuart 16. 



Royal Institution of Grkat Britain, at 3. — Prof. A. G. Perkin : 

 Dyeing: Ancient and Modern (1). 



RoTAL Society, at 4.30.— Probable Papers.— Frof. L. Hill, D. H. 

 Ash, and J. A. Campbell : The Heating- and Cooling of the Body 

 by Local Application of Hent and Cold.— Prof. J. B. Cohen, 

 C. H. Browning, R. Gaunt, and B. Gulbransen : Relationships 

 between Antiseptic Action and Chemical Constitution, with 

 Special Reference to Compounds of the Pyridine, Quinoline, 

 Aoridine, and Phenazene Series.— D. T. Harr:s : Active Hypersemia. 

 — B. B. Sarkar : The Depressor Nerve of the Rnbbit,— Prof . A. 

 Lipschiitz, Dr. B. Ottow, 0. Wagner, and F. Bormann : The 

 Hypertrophy of the Interstitial Cells in the Testicle of the 

 Gu'nea Pie under Diffpr^nt Exnerimental Conditions. 



LiNNEAN Society of London, at 5. 



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



Royal Meteorological Society, at 5. 



Royal Aehonavtical Society (at Royal Society of Arts), at 5.30.— 

 Sqdr.-Ldr. C. F. A. Portal : Methods of Instruction in Aeroplane 

 Flying. 



Institution of :Mining and Metallvkgy (at Geological Society of 

 London), at 5.30— J. M. Bell : The Occurrence of Silver Ores in 

 South Lorrain, Ontario. Canada. 



iNSTrruTiON OF Electrical Kngineers. at 6.— F. P. Whitaker : 

 Rotary Converters, with Special Reference to Railway Electri- 

 fication. 



Chemical Society, at 8.— .\. Lnpworth : .\ Theoretical Derivation 

 of the Principle of Induced jVlternate Polarities.— W. O. Kermack 

 and R. Robinson: An Explanation of the Property of Induced 

 Polarity of Atoms and an Interpretation of the Theory of Partial 

 Valencies on an Electronic Basis. 



Society for Constrictive Birth Control and Racial Progress 

 (at Essex Hall, Essex Street, W.C.2), at 8.— E. B. Turner: Sex 

 Relationships. 



FRIDAY, February 17. 



Geological Society of London (Annual General Meeting), at '(.- 

 Presidential Address. 



Royal Society of Medicine (Otology Section), at 5. 



Royal College of Surgeons of England, at 5. — Prof. Swale Vincent : 

 A Critical Examination of Current Views on Internal Secretion 

 (Arris and Gale Lecture). 



Institution of Mechanical Engineers (Annual General Meeting), 

 at 6.— A. T. Wall : Electric Welding applied to Steel Con- 

 struction, with Special Reference to Ships. 



Junior Institutio.v of Engineers (at Caxton Hall), at 8. — W. J. 

 Leaton : Water Purification for Boiler Feed Purposes. 



SociETE Internatio.nale de Philologie, Sciences et Beaux-Arts 

 (Celtic Section) (at 8 Taviton Street, W.C.I), at 8— Dr. W. J. E. 

 Scott: The Mines of El Dorado: an Historical Account of the 

 Maritime Trade of Spain with Ireland, 2000 to 700 B.C. (2). 



Royal Society of ^Medicine (Electro-theraDeutics Section), at 8.30. 

 -Dr. G. W. C. Kaye : Radiology and Physios (Mackenzie-David- 

 son Slemorial Lecture). •* 



Royal Institution of Great Britain, at 9. — Prof. D. S. M. Watson : 

 History of the Mammalian Ear. 



SATURDAY, February 18. 



Royal Institution of Great Britain, at 3. — Prof. E. A. Gardner : 

 Masterpieces of Greek Sculpture (1). 



PUBLIC LECTURES. 



(.1 number in brackets iinlicdtca the number of a lecture 



in a series.) 



THURSDAY, February 9. 



University College, at 5.15.— Prof. J. E. G. de Montmorency : 



Welsh and Irish Tribal Customs (1). 

 King's College, at 5.30.— Dr. O. Faber : Reinforced Concrete (4). 



— M. Beza : Nereids in Roumanian Folk-lore. 

 Tavistock Clinic for Functional Nerve Cases (at the Mary Ward 



Settlement, Tavistock Place, W.C.I), at 5.30.— Dr. H. Crichton 



Miller: The New Psychology and its Bearing on Education (3). 

 St. John's Hospital for Diseases of the Skin (Leicester Square, 



W.0.2), at 6.— Dr. W. Griffith: The Skin Eruptions of Syphilis 



(Chesterfield Lecture). 



FRID.iY, February 10. 

 Meteorological Office (South Kensington), at 3.— Sir Napier 



Shaw : The Structure of the Atmosphere and the Meteorology 



of the Globe (4). 



SATURDAY, February 11. 

 London Day Training College, at 11 a.m.— Prof. J. Adams : The 



School Class (4). 

 HORNIMAN Museum (Forest Hill), at 3.30.— Miss M. A. Murray: 



The Domestic Life of the Ancient Egyptians. 

 MONDAY, February 13. 

 University College, at 5.15.— A. G. R. Foulertun : Administrative 



Measures for the Improvement of the Public Health. 

 City of London (Boys') School (Victoria Embankment), at 5.30.— 



Miss Rosa Bassett : The Dalton Plan of Self-education (2). 

 King's College, at 5,30.— Dr. J. S. Steppat : Recent Developments 



in German Education and Student Life (4).— Prof. C. L. Fortes- 

 cue: Wireless Transmitting Valves (4). 



TUESDAY, February 14. 



London School of Economics and Political Science, at 6. — Sir 



Josiah C. Stamp: The Administrative Factor in Government (1). 



WEDNESDAY, February 15. 



East London College, at 4.— Prof. F. E. Fritch : Certain Aspects 



of Freshwater Algal Biology (1). 



NO. 2728, VOL. 109] 



L. D. Barnett : 

 W. 



The 



Skeat : The Living 



School of Oriental Studies, at 5. — Dr. 



Jains. 

 HoRNiMAN Museum (Forest Hill), at 6.— W. 



Past in Britain (4). 

 University College, at 8.— The Current Work of the Biometric 



and Eugenics Laboratories (1). — Prof. Karl Pearson : Side-lights 



on the Evolution of Man : From the Knee-joint. 

 THURSDAY, February 16. 

 University College, at 5.15.— Prof. J. E. G. de Montmorency : 



Welsh and Irish Tribal Customs (2). 

 King's College, at 5.30.— Dr. O. Faber: Reinforced Concrete (5).— 



M Beza : Nereids in Roumanian Folklore (2). 

 St. John's Hospital for Diseases of the Skin (Leicester Square, 



W.C.2), at 6.— Dr. W. K. Sibley: Seborrhoea and Psoriasis 



(Chesterfield Lecture). 



FRIDAY, February 17. 

 Meteorological Office (South Kensington), at 3.— Sir Napier 



Shaw : The Structure of the Atmosphere and the Meteorologv 



of the Globe (5). 

 King's College, at 5. — Prof. R. Robinson : Orientation and Con- 

 jugation in Organic Chemistry from the Standpoint of the 



Theories of Partial Valency and of Latent Polarity of Atoms (2). 

 University College, at 5. — Prof. G. Elliot Smith : The Evolution 



of Man (2). 

 Tavistock Clinic for Functional Nerve Cases (at Marv Ward 



Settlement, Tavistock Place, W.C.I), at 5,30.— Dr. H. Crichton 



Miller: The New Psychology and its Bearing on Education (4). 



SATURDAY, February 18. 



Royal Society of .\rts, at 10.30 a.m.— Prof, J. A. Thomson : The 



Migration of Birds (Lectures for Teachers). 

 London Day Training College, at 11 a.m.— Prof. J. Adams : The 



School Class (5). 

 HoRNiMAN Museum (Forest Hill), at 3.30.— Dr. E. Marion Delf : A 



Botanist in South .Africa. 



CONTENTS. p 



British Water Power and its Administration . . . 



American Organic Chemicals 



Elie Metchnikoff 



Electrical Measurements. By E. T. J 



The Art of Prehistoric Man. {Illustrated.) By 



A. S. W 



The Science of Ancient Greece. By F. S. Marvin 



Jute and Silk in India 



Valency and Atomic Structure 



Our Bookshelf . 



Lette s to the Editor:— 



The Antitrades. {With Diagram.)— "Dt. W. van 



Bemmelen . . . 



Some Problems in Evolution.— Dr. J. T. Cunning- 

 ham ; Prof. R. Ruggles Gates; Dr. S. C. 

 Harland ... ... 



The Radiant Spectrum.— Prof. C. V. Raman . . 

 The Naming of the Minor Planet No. 907, Barnar- 



diana.— Prof. E. E. Birnard 



The ResonanceTheoryof Hearing.— Dr. W. Perrett 



Aurora Borealis of January 30. — Charles S. Leaf 



Some Statistics of Evolution and Geographical 



Distribution in Plants and Animals, and their 



Significance. {With Diagrams.) By Dr. J. C. 



Willis, F.R.S., and G. Udny Yule, C.B.E., 



F.R.S 



Some Problems of Long-distance Radio- 

 telegraphy.— II. By Dr. J. A. Fleming, F.R.S. 

 A Journal for Physical Measurements and 



Instruments 



Obituary: — 



Sir Henry Jones 



Prof. V. Giuffrida-Ruggeri. By A. K 



Current Topics and Events 



Our Astronomical Column : — 



Conjunction of Mars with a Star ... = ...•• 



Comet Notes . .... 



Internal Motions in the Spiral Nebula M 81 .... 



Research Items ... 



Botany at the British Association. By E. N. M. T. 

 Mont Blanc Meteorological Observations. By Sir 



Napier Shaw, F.R.S • 



Sponpe-spicules 



Iron Production in India 



University and Educational Intelligence ... 



Calendar of Industrial Pioneers 



Societies and Academies 



Official Publications Received 



Diary of Societies 



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