272 



NATURE 



[November 6, 1919 



CONTENTS. 



JUBILEE NUMBER. 



PAGE ! 



Valedictory Memories. By Sir Norman Lockyer, 

 K.C.B , F.R.S 189 



Progress and Promise 190 



Scientific Worthies. XLT. — Sir Norman l,ockyer, 

 K.C.B. , F.R.S. By Dr. H. Deslandres (Vice- 

 President of the Academy of Sciences of Paris, 

 Director of the Astrophysical Observatory of 

 Meudon) , . • . . igt 



Retrospect and Prospect. By Sir Archibald Geikie, 

 O.M., K.C.B., F.R.S 195 



The Foundation of Biological Sciences. By Sir E. 

 Ray Lankester, K.C.B., F.R.S 198 



Science and the Church. By the Ven. James M. 

 Wilson, D.D., Canon and Vice-Dean of \Vorcester 201 



The Expansion of Geology. By Prof. T. G. Bonney, 

 F.R.S 203 



The New Birth of Medicine. By Sir T. Clifford 

 Allbutt, K.C.B., F.R.S 204 



Developments of Physiology. By Sir Edward 

 Sharpey Schafer, F.R.S 207 



The Modern School of Psychology ....... 208 



Preventive Medicine since 1869. By Dr. C. J. 

 Martin, F.R.S 210 



The Antiquity of Man. By Dr. A. Smith W^ood- 

 ward, F.R S 212 



The Present Position of the Mutation Theory. By 

 Prof. Hugo de Vries, For. Mem. R.S 213 



The Progress of Mendelism. By Prof, W. Bateson, 

 F.R.S 214 



Telegony. By Prof. J. Cossar Ewart, F.R.S. . . . 

 Progress of Chemistry. By Sir Edward Thorpe, 



C.B., F.R.S 



Chemistry in the Making. By Prof. Henry E. 



Armstrong, F.R.S 



The Discovery of Chemical Elements since 1869. 



By Prof. H. B. Dixon, F.R.S., and H. Stephen, 



M.Sc 



Physical Chemistry— Past and Present. By Prof. 



J. C. Philip 



The Influence of Investigations on the Electrical 



Properties of Gases on our Conceptio'-s of the 



Structure of Matter. By Sir J. J. Thomson, 



O.M,, Pres.R.S 



Radium and the Electron. By Sir Ernest 



Rutherford, F.R.S 



Atoms and Molecules. By Prof. Frederick Soddy, 



F.R.S 



lonisation of Gases. By Prof. J. S. Townsend, 



F.R.S 



Spectroscopic Astronomy. By Prof. A. Fowler, 



F.R.S 



X-Rays in Physical Science. By Prof. W, H. 



Bragg, F.R.S 



X-Rays in Medical Science. By A. C. Jordan, 



M.D., M.R.C.P 



Progress of Electrical Invention. By Prof. J. A. 



Fleming, F.R.S 



NO. 2610, VOL. 104] 



216 

 217 

 219 



221 

 223 



224 

 226 

 230 

 233 

 234 

 235 

 237 

 239 



I'.VGE 

 Developments of Mechanical Science.. By Dr. W. C. 



Unwin, F.R S 241 



The Trend of Modern Metallurgy. By Prof. H. C. H. 



Carpenter, F.R.S 243 



Position and Prospects of Aviation. By L. Bairstow, 



F.R.S 246 



The Liquefaction of Gases. By Prof. C. H. Lees, 



F.R.S. 247 



Progress of Meteorology. By W. H. Dines, F.R.S. 247 



Progress of Geography. By Sir John Scott Keltie. 249 



Progress of Photography. By Chapman Jones. . . 251 

 The Reproduction of Illustrations, 1869-igig. liy 



Emery Walker 252 



Progress in Science Teaching. By Sir William A. 



Tilden, F.R.S 253 



Aspects of Science at Universities. By Dr. Alex 



Hill 255 



Fifty Years of Technical Education. By J. H. 



Reynolds, M.Sc 257 



The Promotion of Research. By Sir Richard A. 



Gregory 259 



Research and its Application. By Dr. W. H. 



Nichols 262 



British Botanic Gardens and Stations 263 



The Scientific and Technical Department of the 



Imperial Institute • 263 



The Lister Institute of Preventive Medicine . . . 264 



The National Physical Laboratory ■ ■ 264 



The Davy Faraday Research Laboratory of the 



Royal Institution 264 



The International Catalogue of Scientific Literature 265 



The Tropical Diseases Bureau 265 



Women at Cambridge 265 



Notes 266 



Our Astronomical Column : — 



Comets 269 



The Sources of Stellar Energy . ..,...■ 269 

 British Scientific Societies Founded during the 



Past Fifty Years 270 



Societies and Academies 271 



Diary of Societies ^^^^^K ^7' 



Editorial and Puhlishing Offices: 



MACMILL.^N AND CO., Ltd., 



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



Advertisements and husiness letters to be addressed to the 

 Piiilishers. 



Editorial Coinmutiications to the Editor. 



Telegraphic Address : Phusis, London. 

 Telephone Nutnber : Gerrard 8830. 



