SCIENCE 



Friday, IsTovember 5, 1920 



CONTENTS 

 William Henry Welch: Dr. Simon Plexnek. 417 



The Structures of the Hydrogen Molecule and 

 the Hydrogen Ion: Dr. Irving Langmuib. 433 



Scientific Events: — 



The American Society of Mechanical Engi- 

 neers; The American Ornithologists' Union; 

 The American Society of Naturalists; The 



, Association of American Geographers ; The 

 Department of Chemistry of the Ohio State 

 University ; Dedication of the Edward Orton 

 Memorial Library 437 



Scientific Notes and News 439 



University and Educational Neius 441 



Discussion and Correspondence : — 



Visible Sound Waves: Professor Fred- 

 erick A. Saunders. Drift Bottles as indi- 

 cating a Superficial Circulation in the Gulf 

 of Maine : Professor James W. Mayor .... 442 



Scientific BooTcs: — - 

 Bouvier's La Vie Psychique des Insectes: 

 Professor W. M. Wheeler ' 443 



Special Articles: — 



On the Protein Content of Wheat: Dr. W. 

 P. Gericke. The Vitamine acquirements of 

 the Sat on Diets rich in Protein, Carbohy- 

 drate and Fat: Casimir Punk and Harry 

 B. DuBiN 446 



MSS. intended for publication and books, etc., intended for 

 review should be sent to The Editor of Science, Garrison-on- 

 Hudson, N. Y. 



WILLIAM HENRY WELCHi 



A biographical sketch 

 On this meinorable and beautiful oocasion I 

 have the chexished honor of having been chosen 

 to perform, as it were, the duties of chronicler, 

 in order that vre may all be led to review in 

 our minds the successive steps by which our 

 great leader and master rose to such high 

 distinction and wrought the miracle of giving 

 to medicine a new birth in this country; and 

 in order, also, that our successors, lighting 

 their lamps at the shrine of Pathology and 

 studying the treasures which these precious 

 volumes enclose, may catch a gleam of what 

 manner of man he was who produced them, 

 and by the vigor of his living example and the 

 charm of a rare personality, as well as by the 

 power of his spoken and written word, in the 

 short span of a lifetime raised medicine in 

 the United States from a beneficent art to an 

 expanding science. 



. William Henry Welch was born in Norfolk, 

 Connecticut, April 8, 1850. He was the son 

 of William and Emeline (CoUin) Welch. 

 His father was a practising physician, as were 

 .four of his father's brothers. Moreover, a 

 great grandfather and grandfather were also 

 physicians. When about one year of age, Wil- 

 liam Henry's mother died; thereafter he was 



1 An introduction to the collected papers and 

 addresses of Dr. Welch, compiled in his honor on 

 the occasion of his seventieth birthday, to be pub- 

 lished in three volumes by the Johns Hopkins Press 

 under the editorial supervision of a committee con- 

 sisting of John J. Abel, Lewellys P. Barker, Frank 

 Billings, Walter C. Burket, William T. Councilman, 

 Harvey Cusihing, John M. T. Pinney, Simon Plex- 

 ner, William S. Halsted, William H. Howell, John 

 Howland, Henry M. Hurd, Henry Barton Jacobs, 

 William W. Keen, Howard A. Kelly, William G. 

 MacCallimi, William J. Mayo, Ralph B. Seem, Win- 

 ford H. Smith, William S. Thayer, J. Whitridge 

 Williams, Hugh H. Young. 



