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, Meohanioa ; E. C. Pickering, 

 Astronomy ; T. C Mendknhall, Physios ; E. H. Thurston, Engineering ; Ira Eemsen, 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. Bbitton, Botany ; C. S. Minot, Embryology, Histology ; H. P. Bow- 

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

 Pathology ; J. McKebn Cattbll, Psychology. 



Friday, December 12, 1902. 



CONTENTS: 



Address of the President of tlve Botanical Sec- 

 tion of the British Association for the Ad- 

 vancement of Science: Professor J. Rey- 

 nolds Green 921 



The American Ornithologists' Union: John 

 H. Sage 938 



A (graduate School of Engineering Research. 940 



Scientific BooJxS: — 



Dr. Meyer on some European Museums: 



F. A. L 941 



Scientifio Journals and Articles 943 



Societies and Academies: — 



The American Association for the Advance- 

 ment of Science. Tlie Biological Society 

 of Washington: F. A. Lucas. The Botan- 

 ical Society of Washington: Dr. Herbekt 

 J. Webber 944 



Discussion and Correspondence : — 



The Grand Gulf Formation: Professor 

 Wm. H. Dall. The Squids from Onondaga 

 Lake, N. Y. : Dr. John M. Clarke 946 



Shorter Articles : — 



Preliminary Results on the Changes of 

 Atmospheric Nucleation: Professor Carl 

 Barus. The Laramie Cretaceous of Wy- 

 oming : Professor S. W. Williston 948 



Botanical Notes: — 



Air Humidity; Polyporus Officinalis in 

 America; Botany in the Washington Meet- 

 ing; Two Books on Forestry; Three For- 

 estry Journals: Professor Charles E. 

 Bessey 953 



The Virchoio Memorial 955 



Lecture Courses of the National Geographic 

 Society 956 



A General Meeting of the American Phi- 

 losophical Society 957 



Scientific Notes and Netvs 958 



University and Educational Neios 960 



MSS intended for publication and books, etc., intendtd 

 for review shonid be sent to the responsible editor. Pro- 

 fessor 1. McK'een ''attfll. Onrrisnn-on-Hndpon. N, V. 



ADDRESS OF TEE PRESIDENT OF THE BO- 

 TANICAL SECTION OF THE BRITISH 

 ASSOCIATION FOR THE AD- 

 VANCEMENT OF SCIENCE." 



The visits of the British Association to 

 a particular city recur with a certain 

 irregular frequency and bring with them 

 a temptation to the president of a section 

 to dwell in his opening address on the prog- 

 ress made in the science associated with 

 that section during the interval between 

 such consecutive visits. This course pos- 

 sesses a certain fascination of its own, for 

 it enables us to realize how far the patient 

 investigations of years have ultimately led 

 to definite advances in knowledge and to 

 appreciate the difficulties that have in- 

 volved disappointments, and that still have 

 to be surmounted. We like to look back 

 upon the struggles, to record the triumphs, 

 to deplore the failures, and to brace our- 

 selves for new efforts. The opportunity 

 afforded hereby for criticism of methods, 

 for reconsideration of what have been held 

 to be fundamental principles, for the lay- 

 ing down of new lines of work based upon 

 longer experience, shows us how desirable 

 such a periodical retrospect may be. 



Standing as we do almost at the thresh- 

 old of a new century, it seems particu- 

 larly advisable that we shall occupy our 

 thoughts with some such considerations to- 



* Belfast meeting, 1902. 



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