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POPULAR SCIENCE MONTHLY 



The Mitchell Tower over the Group of Buildings which will be the 

 Headquakters for the Meeting. 



branches of the societies devoted to 

 mathematics and to zoology. 



The retiring president of the Amer- 

 ican Association is Dr. William H. 

 Welch, of the Johns Hopkins Univer- 

 sity, who will make an address on the 

 evening of the first day of the meeting. 

 Dr. E. L. Nichols, professor of physics 

 at Cornell University, is the president 

 of the meeting and will reply to the 

 addresses of welcome to be made by 

 the president of the University of Chi- 



cago and others. Vice-presidential ad- 

 dresses are to be given in mathematics 

 by Professor Kasner, of Columbia Uni- 

 versity; in chemistry, by Dr. Richard- 

 son, of New York City; in zoology, by 

 Professor Conklin, of the University of 

 Pennsylvania; in physics, by Professor 

 Sabine, of Harvard University; in eco- 

 nomics, by Mr. Conant, of New York 

 City; in pathology, by Dr. Flexner, of 

 the Rockefeller Institute for Medical 

 Research; in economic and social sci- 



