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. 



Feidat, October 14, 1904. 



CONTENTS: 

 Mental Science: Pkesident G. Stanley Hall 481 



Present Problems of Organic Chemistry: Pro- 

 fessor William A. Notes 490 



Scientific Books: — - 

 . Museums and Museum Appliances : F. A. 

 L. Gardiner on Madreporaria: Dr. T. 

 Wayland Vaughan 501 



Scientific Journals and Articles 505 



Discussion and Correspondence : — 



The Metric System : Dr. A. E. Outjiann . . 50G 



Special Articles: — • 



Is Matter to be Abolished? Professor 

 Trancis E. Nipher 506 



Current Notes on Meteorology : — 



Report of the Chief of the Weather 

 Bureau; Monthly Weather Reviexc; Ger- 

 man Meteorological Society; Notes: Pro- 

 fessor P. DeC. Ward 507 



Scientific Notes and News 508 



University and Educational News 511 



MSS. inteudedfor puhlicatiou aud books, etc., intended 

 for review should be sent to the Editor of Science, Garri- 

 son-oTi-Hndson, N. Y 



MENTAL SCIENCE* 

 We have great reason to congratulate 

 ourselves on the progress of psychology, 

 not only in this country but in the world 



* Address before the Division of Mental Science, 

 International Congress of Arts and Science, Uni- 

 versal Exposition, St. Ix)uis. 



during the last quarter of a century. Not 

 only have students, teachers, text-books, 

 journals, societies, laboratories and mono- 

 graphs increased, and new fields have 

 opened and old ones widened, but our, de- 

 partment has been enriched by original 

 contributions that have profoundly modi- 

 fied our views of mind and even of life 

 itself. For the first time in this field 

 American investigators have borne an im- 

 portant and recognized part in advancing 

 man's knowledge of the soul. Among these 

 we take pride even in the presence of our 

 distinguished foreign guests in naming first 

 of all James, who, more than any other 

 American, has occupied and influenced the 

 psychological thought of both experts and 

 students here for a decade, and whose 

 charming personality and style have done 

 most to infect cultivated laymen in all ad- 

 jacent fields with interest in psychology 

 and to make American thought known and 

 respected abroad; Ladd, to "whom we owe 

 the first text on physiological psychology 

 in English and who, more than any other 

 American, illustrates the old tradition of a 

 system of philosophic thought large enough 

 to embrace most of the topics from the 

 laboratory to religion; Miinsterberg, who 

 has not only done more than any of his 

 distinguished Teutonic predecessors from 

 Agassiz and Lieber down to make Germany 

 and America know and respect each other, 

 but has been the first to lay the foundations 

 of a new efferent system of thought which 

 harmonized the best in Fichte and Schopen- 

 hauer with the choicest results of the labo- 

 ratory; Titehener with his thorough Eng- 



