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. Newoomb, Mathematics ; E. S. Woodward, Mechanics ; E. C. Pickkking, 

 Astronomy ; T. C. Mendenhall, Physics ; K. H. Thurston, Engineering ; Ira Remsen, Chemistry ; 

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

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

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

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

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



Friday, July 4, 1902. 



CONTENTS: 



The American Association for the Advance- 

 ment of Science: — 



The Problem of Consciousness in its Bio- 

 logical Asjjects: Professor Charles 



Sedgwick Minot 1 



Recent Progress in American Bridge Con- 

 struction: Professok Henry S. Jacoby. 12 



Report of Progress of Nebraska State Geo- 

 logical Survey and the Morrill Geological 

 Expedition of 1901: Peofessoe Eewin 

 Hinckley Baeboue 22 



Scientific Books: — 



■Jastrotc's Fact and Fable in Psychology: 

 Professoe Geoege M. Steatton. Schurtz 

 on Altersklassen und Mdnnerbunde: Peo- 

 fessoe 0. T. Mason 23 



Societies and Academies : — 



New Torlc Academy of Sciences: Section of 

 Biology: Peofessoe Heney E. Ceampton. 

 Section of Astronomy, Physics and Chem- 

 istry: Dk. S. a. Mitchell. Torrey Bo- 

 tanical Club : Marshall A. Ho^ve 27 



Discussion and Correspondence : — 



Zoological Nomenclature in Botany: 0. F. 

 Cook. Coiled Basketry: Chaeles C. Wil- 

 LOUGHBY. Iridescent Clouds: Peofessoe 

 R. DeC. Ward. Physics and the Study of 

 Medicine: Peofessoe W. H. Howell 30 



Shorter Articles: — 



Ore a Method in Bygrometry: Professor 

 C. Barus. Sclerotinia Fructigena: Pro- 

 fessor J. B. S. Norton 33 



Quotations : — 



The House of Delegates of the American 

 Medical Association 34 



The Elizabeth Thompson Science Fund: Pro- 

 fessor Charles S. Minot 35 



The Pittsburgh Meeting of the American As- 

 sociation for the Advancement of Science . . 36 



Scientific Notes and News 36 



University and Educational News 39 



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

 for review should be sent to tlie responsible editor. Pro- 

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



THE PROBLEM OF CONSCIOUSNESS IN 

 ITS BIOLOGICAL ASPECTS* 



OuE Association meets in Pittsburgh for 

 the first time. We are glad to indicate by 

 our assembling here our appreciation of the 

 immense work for the promotion of educa- 

 tion and science which has begun in this 

 city and already is of national value. It 

 has been initiated with so great wisdom 

 and zeal that we expect it to render services 

 to knowledge of the highest character, and 

 we are glad to be guests of a city and of 

 institutions which are contributing so nobly 

 to the cause of science. 



We may congratulate ourselves on the 

 bright prospects of the Association. Our 

 membership has grown rapidly, and ought 

 soon to exceed four thousand. Every 

 member should endeavor to secure new ad- 

 herents. For our next meeting we are to 

 break with the long tradition of summer 

 gatherings, and assemble instead at New 

 Tear's time, presumably at Washington. 

 To render this possible it was necessary to 

 secure the cooperation of our universities, 

 colleges and technical schools, to set aside 

 the week in which the first of January falls, 

 as Convocation Week for the meeting of 

 learned societies. The plan, owing to the 

 cordial and almost universal support given 

 by the higher educational institutions, has 



* Address of the President of the American 

 Association for the Advancement of Science. 

 Pittsburgh Meeting, June 28 to July 3, 1902. 



