4.8 



SCIENCE. 



[N. S. Vol. XVII. No. 419. 



8:30 to 11 P.M., to afford a convenient op- 

 portunity for viewing the collections. 



On Friday afternoon at 4 o'clock an 

 illustrated public lecture complimentary 

 to the citizens of Washington was given 

 at the Lafayette Opera House, by Pro- 

 fessor John Hays Hammond, on 'King 

 Solomon's Mines, or the Mines of Ophir. ' 



On Friday evening the trustees of the 

 Corcoran Art Gallery and the local com- 

 mittee tendered a reception to the visiting 

 members of the association and the affili- 

 ated societies at the Corcoran Art Gallery, 

 from 8 :30 to 11 o 'clock. On Friday even- 

 ing also was held the dinner of the Ameri- 

 can Alpine Club. 



On Saturday morning at 10 o'clock the 

 President of the United States received 

 the members of the A. A. A. S. and affili- 

 ated societies at the White House. 



Resolutions of thanks for courtesies ex- 

 tended were offered by Ex-President Minot 

 and unanimously adopted at the closing 

 general session. The institutions and in- 

 dividuals to whom the association was 

 especially indebted include: Columbian 

 University, Cosmos Club, Local" Committee 

 and its secretary (Dr. Benjamin), St. 

 Matthew's Church, Georgetown Univer- 

 sity, Caroll Institute, Press of Washington, 

 Trustees of Corcoran Art Gallery, the 

 President of the United States, secretary 

 of the Smithsonian Institution, acting 

 director of the U. S. National Museum, 

 director of the Naval Observatory, U. S. 

 commissioner of Fish and Fisheries. 



At the meeting of the general committee 

 on Thursday evening it was decided to 

 hold the next meeting of the association 

 in St. Louis during convocation week, 

 1903^, and to recommend Philadelphia 

 as the place of the following meeting. 

 The following were elected officers for the 

 St. Louis meeting: 



President — Carroll D. Wright, Washington, 

 Vice-Presidents — Section A, Mathematics and 



Astronomy, O. H. Tittmann, Washington; B, 

 Physics, E. H. Hall, Harvard University ; C, Chem- 

 istry, W. D. Bancroft, Cornell University; D, 

 Mechanical Science and Engineering, C. M. Wood- 

 ward, Washington University; E, Geology and 

 Geography, I. C. Russell, University of Michigan ; ' 

 F, Zoology, E. L. Mark, Harvard University; G, 

 Botany, T. H. Macbride, University of Iowa; H, 

 Anthropology, M. H. Saville, American Museum of 

 Natural I-Iistory; I, Social and Economic Science, 

 S. E. Baldwin, New Haven; K, Physiology and 

 Experimental Medicine, H. P. Bowditch, Harvard 

 University. 



Permanent Secretary — L. O. Howard, Cosmos 

 Club, Washington. 



General Secretary — Chas. W. Stiles. 



Secretary of the ■ Council — Chas. S. Howe, Case 

 School. 



Secretaries of the Sections. — Section A, Mathe- 

 matics and Astronomy, L. G. Weld, University of 

 Iowa; B, Physics, D. C. Miller, Case School; C, 

 Chemistry, A. H. Gill, Massachusetts Institute of 

 Technology; D, Mechanical Science and Engi- 

 neering (none proposed) ; E, Geology, G. B. Shat- 

 tuck, Baltimore; F, Zoology, C. Judson Herrick, 

 Denison University; G, Botany, F. E. Lloyd, 

 Teachers College, Columbia University; H, An- 

 thropology, R. B. Dixon, Harvard University; I, 

 Social and Economic Science, J. F. Crowell, Wash- 

 ington; K, Physiology and Experimental Medi- 

 cine, F. S. Lee, Columbia University. 



Treasurer. — R. S. Woodward, Columbia Univer- 

 sity, New York, N. Y. 



Henry B. Ward, 

 General Secretary. 



The University of Nebraska. 



MODERN TENDENCIES IN THE UTILIZA- 

 TION OF POWER.* 



It has been stated that to the construc- 

 tion and perfection of her machinery, more 

 than to any other cause, may be ascribed the 

 present commercial supremacy of the 

 United States. 



Be that as it may, the economical pro- 

 duction of her manufactures and the con- 

 venient adaptations of time and labor 



* Address of the chairman of Section D, Engi- 

 neering and Mechanical Science, and vice-presi- 

 dent of the American Association for the Advance- 

 ment of Science. Read at the Washington 

 meeting, December 29, 1902. 



