530 



SCIENCE 



[N. S. Vol. XL VI. No. 1196 



THE PITTSBURGH MEETING OF THE 



AMERICAN ASSOCIATION FOR 



THE ADVANCEMENT OF 



SCIENCE 



The opening session will be held on Thurs- 

 day evening at 8 o'clock in the Carnegie Music 

 Hall. After general announcements concern- 

 ing the Convocation Week meetings, the re- 

 tiring president of the Association, Dr. 

 Charles E. Van Hise, will deliver his ad- 

 dress on " The economic effects of the world 

 wax in the United States." Following the 

 president's address, a reception wiU be ten- 

 dered to the members of the association and 

 the alSliated societies in the foyer of the 

 Music HaU. 



The addresses of the retiring vice-presi- 

 dents, to be delivered throughout the week, 

 are as follows: 

 Section A. Luther P. Eisenliart The Kinemat- 



ioal Generation of Surfaces. 

 Section B. Henry A. Bumstead. Present Tend- 

 encies in Theoretical Physics. 

 Section C. Julius Stieglitz. The Electron Theory 

 of Valence and its Application to Problems of 

 Inorganic and Organic Chemistry. 

 Section D. Henry M. Howe. Some Needs of En- 

 gineering. 

 Section E. Eollin D. Salisbury. The Educa- 

 tional Value of Geology. 

 Section P. George H. Parker. An Underlying 

 Principle in the Architecture of the Nervous 

 System. 

 Section G. C. Stuart Gager. The Near Future 



of Botany in America. 

 Section H. Frederick W. Hodge. The Ancient 



Pueblo of Hawikuh. 

 Section I. Louis I. Dublin. The Significance of 



our Declining Birth Eate. 

 Section K. Edwin O. Jordan. Food-borne In- 

 fections. 

 Section L. (Leonard P. Ayres absent — no ad- 

 dress.) 

 Section M. "Whitman H. Jordan. The Future of 

 Agricultural Education and Research in the 

 United States. 



The symposia, as far as announced, are as 



follows ; 



Section F. The Value of Zoology to Humanity. 



Section E. Mineral Resources and Chemical In- 

 dustries. 



Section H. The Contributions of Psychology to 



the War. 

 Section 6. Forestry Problems after the War, and 



War Work of the Botanical Committee of the 



Council of National Research. 

 Section I. Economic Problems based upon the 



World War. 

 Section K. The Food Problem of to-day (or the 



Lessons of the War in Medicine). 

 Section B. The Relationship of Physics to the 



War. (In cooperation with the Council of Na- 

 tional Defense.) 



The Council wiU meet daily at 9 a.m., at 

 the Schenley Hotel, which will be the hotel 

 headquarters. 



Owing [to the unprecedented demand for 

 railroad service for the nation's defense, pre- 

 ferential rates for individual travel have 

 been tentatively abandoned. The New Eng- 

 land Passenger Association, however, has au- 

 thorized local fares in each direction to its 

 boimdary points going and returning via same 

 route only and over which one-way tickets are 

 regularly sold — one and one half westbound 

 differentials to apply, added to fares tendered. 

 The Trunh-Line Association has authorized 

 the following : " Two cents a mile in each 

 direction, with minimum of $1 for the round 

 trip, going and returning via same route only; 

 tickets to be sold and good, going, December 

 26 to 28, and returning to reach original 

 starting point not later than January 5, 1918." 

 All members living beytfnd the boundaries 

 of the above passenger association territori- 

 ties shovild consult their local passenger ticket 

 agents. Members from west of the Missis- 

 sippi should consult their local ticket agents 

 for trans-continental and winter tourist rates. 



The following affiliated societies have indi- 

 cated their intention to meet in Pittsburgh 

 during Convocation Week: 



American Federation of Tea<;hers of the Mathe- 

 matical and the Natural Sciences. — ^Will hold coun- 

 cil meeting on Saturday, December 29, 1917, 10 

 A.M. President, C. Eiborg Mann. Secretary, 

 William A. Hedrick, Central High School, Wash- 

 ington, D. C. 



American Physical Society. — ^Will hold meetings 



