SCIENCE 



A WEEKLY JOURNAL DEVOTED TO THE ADVANCEMENT OF SCIENCE, PUBLISHING THE 



OFFICIAL NOTICES AND PROCEEDINGS OF THE AMERICAN ASSOCIATION 



FOR THE ADVAN'-EMENT OF SCIENCE. 



fiDiTOEiAL Committee : S. Newcomb, Mathematics ; B. S. Woodward, Mechanics ; E. C. Pickering 

 Astronomy ; T. C Mendenhall, Physics ; E. H. Thdeston, Engineering ; Ira Remsen, Chemistry ; 

 Charles D. Walcott, Geology ; W. M. Davis, Physiography ; Henry F. Osborn, Paleon- 

 tology ; W. K. Brooks, C. Hart Mekriam, Zoology ; S. H. Scudder, Entomology ; C. E. 

 Bessey, N. L. Britton, Botany ; C. S. Minot, Embryology, Histology ; H. P. Bow- 

 ditch, Physiology ; J. S. Billings, Hygiene ; William H. Welch, 

 Pathology ; J. McKeen Cattell, Psychology. 



Feiday, October 10, 1902. 



COXTEyTS: 



John ^^'esley I'oicell (with plate J : G. K. Gil- 

 beet 561 



The Address of the President of the British 

 Association for the Advancement of Science, 



II. : Professor James Dewar 567 



The Bureau of Government Laboratories for 

 the Philippine Islands, and Scientific Posi- 

 tions under it: Professor Paul C. Freeh. 579 

 The Carnegie Institution: Professor Edwin 

 0. Jordan, Professor J. L. Howe, Dr. H. 

 N. Stokes, Professor Edward S. Holden, 

 Edward Atkinson, President Henry S. 



Pritchett 580 



Membership of the American Association . . . . 588 

 Scientific Books: — 



Jones's Elements of Physical Chemistry : 



Dr. H. p. Caeveth 589 



Discussion and Correspondence : — 



The Marine Biological Laboratory and the 

 Carnegie Institution: Professor E. B. 

 Wilson. Tlie Cooling of Gases by Expan- 

 sion and the Kinetic Theory: Professor 

 R. W. Wood. The Law of Physics: Pno- 

 FESSOR T. D. A, CockerelL. Lichens on 

 Rocks: Samuel T. .Hensel.- Bones of a 



Mastodon Found: Reginald Gordon 591 



The Americanist Congress in New York 594 



The British and American Associations 594 



The Metric System in Great Britain 595 



Scientific Notes and News 596 



University and Educational Neics 600 



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

 for review should be sent to the responsible editor, Pro- 

 fessor J. McKeen Cattell, Garrison-on-Hudson, N. Y. 



JOEN WESLEY POWELL. 



John Wesley Powell was born March 

 24, 1834, at Mount Morris, New York. He- 

 died September 23, 1902, at his summer 

 home in Haven, Maine. He was married in 

 1862 to Emma Dean, of Detroit. His wife 

 and daughter, an only child, survive him.. 



His parents were English, having 

 reached this country only a few months 

 before his birth. His father was a Metho- 

 dist preacher and soon removed from New- 

 York, living successively in Ohio, Wiscon- 

 sin and Illinois. His father's occupation 

 took him much from home, and upon the 

 son, while yet a boy, devolved the duty of 

 conducting the farm from which the fam- 

 ily derived its principal support. Powell's- 

 early schooling was that ordinarily obtain- 

 able in a rural community. His scientific 

 bent was acquired by association with an 

 old man by the name of Crookham, and 

 studies in natural history were ; begun at 

 an early age. His later education was 

 largely independent of schools, but he at- 

 tended Jacksonville College for a short 

 time, and was at Oberlin two years pur- 

 suing a special course. In early manhood 

 he supported himself by teaching, being- 

 at the same time a hard student and pur- 

 suing natural history studies with enthu- 

 siasm. He traversed portions of Wiscon- 

 sin, Illinois, Iowa and Missouri on foot. 

 He made a voyage of the Mississippi River 



