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. 



EDITOEI.AL CoMMiTTBK : S. Newoomb, Mathematics ; E. S. Woodward, Meohanios ; E. C. Pickkking, 

 Astronomy ; T. C. Mbndknhall, Physics ; K. H. Thurston, Engineering ; Iea Rkmsen, 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. Britton, Botany ; C. S. Minot, Embryology, Histology ; H. P. Bow- 

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

 Pathology ; J. MoKeen Cattell, Psychology. 



Friday, December 5, 1902. 



CONTENTS: 



Ogden A'. Rood: Professor W. Le Conte 

 Stevens 881 



International Congress of Americanists at 

 Keiv York: Professor Alexander F. 

 Chamberlain 884 



Fiflli liilrriiationvl Congress of Applied 

 Chemistry: Db. H. W. Wilet 899 



Scientific Books: — 



Recent Papers on Braehiopoda: Professor 

 C. E. Beecheb. Gomss's Curved Surfaces: 

 Professor A. S. Hathaway, van't Hoff's 

 Vortriige ilher physikalische Chemie : Pro- 

 fessor Theodore W. Eichabds 901 



Societies and Academies: — 



The American Association for the Advance- 

 ment of Science. N. T. Academy of Sci- 

 ences: Section of Geology and Mineralogy : 

 Dr. Edmund 0. Hovey. Section of Astron- 

 omy, Physics and Chemistry: Dr. S. A. 

 Mitchell. The Elisha Mitchell Scientific 

 Society: Professor Charles Baskebville. 904 



Discussion and Correspondence: — 



The Kinetic Theory and the Expansion of a 

 Compressed Gas into a Vacuum: Pbofessoe 

 R. W. Wood. Bitter Rot of Apples: Pro- 

 fessor T. J. Buerill. a Peculiar Hail- 

 storm: Db. Alfeed W. G. Wilson. What 

 is Nature Study? Pbofessoe W. J. Beal, 

 Dr. a. S. Packard, Pbofessoe John M. 

 Coulter, Professor C. P. Gillette, Pro- 

 fessor W. M. Davis, Professor A. E. Ver- 

 eill. President David Staee Jordan, Pro- 

 fessor Thomas H. Macbbide 908 



Shorter Articles : — 



Teeth in Baptanodon: Chables W. Gil- 

 more 913 



Current Notes on Physiography : — 



Rivers of South Dakota; Argentine- 

 Chilean Boundary ; Maps of Faroe Islands: 

 Pbofessoe W. M. Davis 914 



The Magnetic Survey of Louisiana 915 



The Rhodes Scholarships 916 



Scientific Notes and News 917 



University and Educational News 920 



OGDEN N. ROOD. 



Apter an illness of less than a week, 

 Professor Rood died at his home in New 

 York on Wednesday, November 12. At 

 the time of his death he was the senior 

 member of the faculties of Columbia Uni- 

 versity. 



Ogden Nicholas Rood was born at Dan- 

 bury, Connecticut, on February 3, 1831. 

 His father Avas a Congregational minister, 

 and his mother, Aleida Gouverneur Ogden, 

 belonged to an old and aristocratic family 

 of New York. When seventeen years of 

 age he was sent to Princeton, where he 

 was graduated in 1852. He had already 

 exhibited marked aptitude for experi- 

 mental science, and this fact decided his 

 taking a course of post-graduate study at 

 the newly organized Sheffield Scientific 

 School in New Haven, where the two Silli- 

 mans, father and son, in conjunction with 

 James D. Dana, had established a focus 

 of American scientific activity. This course 

 was crowned with the degree of master of 

 arts, there being at that day little or no 

 differentiation of scholastic degrees in this 

 country. 



In 1854 young Rood went to Europe, 

 continuing his scientific studies at the uni- 

 versities of Munich and Berlin during four 

 years, but without taking the doctor's de- 

 gree. This was in nowise due to lack of 

 fitness for it, but rather to his life-long 



