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following paragraph of especial interest to botanists : "We urge 

 the continuation and extension of forest policies adapted to secure 

 the husbanding and renewal of our diminishing timber supply, the 

 prevention of soil erosion, the protection of headwaters, and the 

 maintenance of the purity and navigability of our streams. We 

 recognize that the private ownership of forest lands entails respon- 

 sibilities in the interests of all the people, and we favor the enact- 

 ment of laws looking to the protection and replacement of pri- 

 vately owned forests." 



The American Association for the Advancement of Science 

 which meets in Baltimore for the June convocation week will 

 devote one day to the celebration of the centennial of the birth of 

 Charles Darwin (February 12, 1809) and the semicentennial of 

 the publication of the " Origin of Species " (November 14, 1859). 

 The program so far as arranged contains the following appropriate 

 titles : " Natural Selection from the Standpoint of Zoology," by 

 Edward B. Poulton, Oxford University ; " Natural Selection 

 from the Standpoint of Botany," by John M. Coulter, University 

 of Chicago ; " The Direct Effect of Environment," by D. T. 

 MacDougal, Carnegie Institution of Washington ; " Mutation," 

 by C. B. Davenport, Carnegie Institution of Washington ; " The 

 Behavior of Unit Characters in Heredity," by W. E. Castle, 

 Harvard University ; " The Isolation Factor," by David Starr 

 Jordan, Stanford University ; " Adaptation," by C. H. Eigen- 

 mann, Indiana University ; " The Bearing of Recent Cytological 

 Studies on Heredity and Evolution," by E. B, Wilson, Columbia 

 University; "Evolution and Psychology," by G. Stanley Hall, 

 Clark University ; and " Recent Paleontological Evidence of Evo- 

 lution," by Henry Fairfield Osborn, Columbia University. It is 

 proposed to print these addresses in a volume to appear during 

 the centennial year. 



Dr. C. Stuart Gager, director of the laboratories of the New 

 York Botanical Garden since February i, 1906, has accepted the 

 appointment of professor of botany in the University of Missouri, 

 at Columbia, Mo. The above will be Dr. Gager's address after 

 September i, 1908. 



