The Popular Science Monthly 



Entered in the Pott Office m Lancaster, Pa,, as second-class matter. ■ 



CONTENTS OF MARCH NUMBER 



The Electric sOperation of Steam Railways. Professor 

 J. B. Whitehead. 



The Influence of Radium Rays on a Few Life Processes 

 of Plants. Professor C. Stuart Gagee. 



The Work of Boards of Health. De. Geokge P. Soper. 



A Biographical History of Botany at St. Louis, Missouri. 

 De. Peeley Spaulding. 



Fire's Havoc a Senseless Waste. F. W. Fitzpatrick:. 



The World's Annual Metal Crop. Theo. F. Van 

 Wagenkn. 



Science and Morality. Professor Albert P. Mathews. 



Steps in the Evolution of Religion. Professor Frank 

 Sargent Hoffman. 



The American Public School. James P. Munrok 



The Progress of Science : 



Harvard University and the Massachusetts Institute 

 of Technology ; English Vital Statistics ; Albert 

 Graudry ; Scientific Items. 



CONTENTS OF APRIL NUMBER 



Charles Robert Darwin 



Born February 12, 1809 



Life and Works of Darwin. Dr. Henry FAiRFiELr 



OSBORN. 



Thelndividuality of Charles Darwin. Charles F. Cox. 



Darwin and Geology. Professor John James Steven- 

 son. 



Darwin and Botany. Dr. Nathaniel Lord Beitton. 



Darwin and Zoology. Dr. Hermon C. Bumpus. 



For Darwin. Professor T. H. Morgan. 



Predarwinian and Postdarwinian Biology. Professor 

 William Morton Wheeler. 



The Halo of a Hundred Years. Professor R. M. Wenley. 



The Origin of the Theory of Natural Selection. Dr. 

 Alfred Russel Wallace. 



The First Presentation of the Theory of Natural Selec- 

 tion. Sir Joseph Hooker. 



The Progress of Science: 



Darwin Manuscripts ; Portraits of Darwin ; Celebra- 

 tions in Honor of Darwin. 



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