TABLE OF CONTENTS. 



PAGE 



An Act to provide for the publication of the reports and papers of the 



Indiana Academy of Science .■ 7 



Appropriation for 1910 and 1911 8 



An act for the protection of birds, their nests and eggs 9 



Officers, 1909-1910 '. , 10 



Committees, 1909-1910 n 



Principal officers since organization 12 



Constitution 13 



By-Laws. 15 



Members, Fellows 16 



Members, non-resident 17 



Members, active 18 



Necrology 24 



Program of the Twenty-fifth Annual Meeting 27 



Resolution providing for the celebration of the Twenty-fifth Anniversary of 



the Indiana Academy of Science 33 



The beginning of the Indiana Academy of Science, by Amos W. Butler. ... 35 



Greetings from Indiana Associations 39 



Plans for the future of the Indiana Academy of Science 48 



Banquet Addresses 54 



Minutes of Twenty-fifth Annual Meeting 73 



President's Address: "Recent Progress in Physics," by A. L. Foley 89 



Address: "Recent Progress in Botany," by John M. Coulter 101 



Address: "Darwin Fifty Years After," by D. S. Jordan. 107 



Address: "Methods and Materials Used in Soil Testing," by H. A. Huston. . Ill 

 Address: "Federal Control of International and Interstate Waters," by 



B. W. Evermann 119 



Address: "The Speed of Migration of Salmon in the Columbia River," ,by 



Chas. W. Greene (Abstract) 125 



Papers presented at the Twenty-fifth Annual Meeting: 



Thought stimulation, under What Conditions Does it Occur? by Rob- 

 ert Hessler 127 



Hygiene of Indoor Swimming Pool', by Severance Burrage 145 



The Prob'em of Sewage Purification in Indiana, by R. L. Sackett .... 157 



