SCIENCE 



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



OFFICIAL NOTICES AND PROCEEDINGS OF THE AMERICAN ASSOCIATION 



FOR THE ADVANCEMENT OF SCIENCE. 



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

 Astronomy ; T. C. Mendenhall, Physics ; E. H. Thurston, Engineering ; Ira Eemsen, Chemistry ; 

 Joseph Le Conte, Charles D. Walcott, Geology ; "W. M. Davis, Physiography ; Henry F. 

 OsBORN, Paleontology ; W. K. Brooks, C. Hart Merriam, Zoology ; S.H. Scudder, Entomol- 

 ogy ; C. E. Bessey, N. L. Britton, Botany ; C. S. Minot, Embryology, Histology ; H. P. 

 BowDiTCH, Physiology ; J. S. Billings, Hygiene ; William H. Welch, Pathology ; 

 J. McKeen Cattell, Psychology ; J. W. Powell, Anthropology. 



Friday, July 5, 1901. 



CONTENTS : 



Some Advances made in Astronomical Science during 

 the Nineteenth Century : Professor C. L. Doo- 

 little 1 



Some Unscientific Reflections upon Science: Pro- 

 fessor Alfred H.Lloyd 13 



Truman Henry Safford : PROFESSOR HAROLD 

 JACOBY 22 



Scientific Books : — 



EllioVs Synopsis of the Blammals of North Amer- 

 ica : Gerrit S. Miller. The Maryland 

 Eocene Book: Dr. John M. Clarke 25 



Societies and Academies : — 



Zoological Club of the University of Chicago : 

 Dr. C. M. Child. The New York Section of 

 the American Chemical Society: Dr. Durand 

 Woodman 28 



Discussion and Correspondence : — 



Ebhinghaus^ s Theory of Color-vision : C. L. 

 Franklin 30 



Shorter Articles : — 

 Novel Persei, No. 2 : Professor Edward C. 

 Pickering. Lime and Magnesia in Plant Pro- 

 duction : D. W. May 31 



Quotations : — 

 Industry and Research 32 



Current Notes on 3Ieteorology : — 



Cannonfiring to prevent Damage by Hail ; Climate 

 of Manila ; Equinoxes and Storm Winds : Pro- 

 fessor E. Dec. Ward 33 



Biological Survey of the Great Lakes by the United 

 States Fish Commission : Professor Jacob 

 Eeighard 34 



27*6 Jubilee of the University of Glasgow 34 



The Harvard Chemical Laboratory 36 



Scientific Notes and News 36 



University and Educational News 39 



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

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

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



SOME ADVANCES 3IADE IN ASTR0N03IICAL 

 SCIENCE DURING THE NINE- 

 TEENTH CENTURY.^ 



In glancing over the field of astronom- 

 ical achievement during the century re- 

 cently closed, the most striking feature is 

 undoubtedly the rise and growth during the 

 past fifty years of an entirely new depart- 

 ment, one totally unknown and almost un- 

 dreamed of before the first half of the cen- 

 tury had passed, that called by Professor 

 Langley the new astronomy, more tech- 

 nically known as astrophysics. In consid- 

 ering the restrictions which must be re- 

 garded in case this address is to be kept 

 within manageable limit, perhaps it would 

 be well to confine mj remarks to this new 

 branch of the science. I shall, however, 

 give the chief place to the older astronomj^, 

 touching briefly upon the newer phase. 



JSTear the close of the seventeenth cen- 

 tury appeared JSTewton's immortal work 

 called by him ' The Mathematical Principles 

 of Natural Philosophy.' In this treatise 

 the law of universal gravitation as the con- 

 trolling and governing principle of the 

 planetary system was established by a rig- 

 orous course of mathematical reasoning. 

 It was many years, however, before these 

 conclusions were universally accepted. On 

 the continent of Europe particularly, the 



* Annual address delivered before the University of 

 Pennsylvania Chapters of the Society of Sigma Xi, 

 June 13, 1901, by C. L. Doolittle. 



