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POPULAR SCIENCE MONTHLY. 



served was that of 1851, when 87 mem- 

 bers were present. The National Acad- 

 emy of Sciences was incorporated in 

 1863, and its fifty members included a 

 large proportion of the scientific men 

 of the country. There was no national 

 society for a separate science until the 

 American Chemical Society was estab- 

 lished in 1874. Now the American 

 Association is divided into ten sections, 

 and about twentv different societies met 



Society of College Teachers of Educa- 

 tion. 



A Society for Vertebrate Paleontol- 

 ogy held its first meeting at Philadel- 

 phia and a Political Science Associa- 

 tion was organized at New Orleans. 



There were about 500 members of the 

 American Association and affiliated so- 

 cieties at St. Louis, about 200 natural- 

 ists at Philadelphia and about 50 phi- 

 losophers at Princeton. Last year the 



Edwin H. Hall, Professor of Physics, Harvard University, Vice-president for Physics. 



in affiliation with it in St. Louis, six 

 societies devoted to the biological sci- 

 ences met simultaneously at Philadel- 

 phia, the Historical and Economic Asso- 

 ciations met at New Orleans and the 

 Philosophical Association at Princeton. 

 Nearly every year new national associa- 

 tions are established, which are rarely 

 if ever abandoned. Thus there became 

 this year affiliated with the American 

 Association two new societies — The So- 

 ciety for Horticultural Science and the 



American Association and affiliated so- 

 cieties held two meetings — one at Pitts- 

 burg in the summer with an attendance 

 of about 600, and one at Washington 

 during convocation week with an at- 

 tendance of about 1,400. The attend- 

 ance at the winter meeting was con- 

 sequently this year only half as large 

 as last year, and the attendance of 

 the year only about one third as large. 

 Yet the number of scientific workers in- 

 creases continually, and the membership 



