The Popular Science Monthly 



Entered in the Post Office in Lancaster, Pa., as second-class matter. 



CONTENT8 OF THE APRIL NUMBER 



Laws of Diminishing Environmental Influences. Dr. 



Frederick Adams Woods. 

 The Leading School of Tropical Medicine. Dr. Edward 



Nelson Tobey. 

 The Growth of a Language. Dr. Charles W. Super. 

 The Denominational College. Dr. Ivy Kellerman. 

 The Trial of an Old Greek Corn-ring. Dr. Frederic 



Earle Whitaker. 

 The Population of the United States. Professor James 



S. Stevens. 

 Preservation of the Fisheries on the High Seas. Dr. 



Charles Hugh Stevenson. 

 The Research Work of the Tortugas Laboratory. Dr. 



Alfred Goldsborough Mayer. 

 The Progress of Science : 



Incorporated Charities ; The Carnegie Foundation 



for the Advancement of Teaching ; Amos Emerson 



Dolbear ; Scientific Items. 



CONTENT8 OF THE MAY NUMBER 



Heredity. Professor W. E. Castle. 



Sneezing, Sea-sickness, Pain. Dr. Alex. Hill. 



The Circulations of the Atmospheres of the Earth and 



of the Sun. Professor Frank H. Bigelow. 

 The Reorganization of American Farming. Professor 



Homer C. Price. 

 Insects and Entomologists, their Relation to the Com- 

 munity at Large. Professor J. B. Smith. 

 Ancient Climates of the West Coast. Professor James 



Perrin Smith. 

 Some Tessts of Academic Efficiency. President Richard 



C. Maclaurin. 

 The Prophecy of Francis Bacon. Professor Ralph 



Barton Perry. 

 John Dalton and his Achievement ; A Glimpse Across 



a Century. Professor R. M. Wenley. 

 The Progress of Science : 



The Death of Alexander Agassiz ; Charles Reid 



Barnes ; The Troubles at Princeton ; Scientific 



Items. 



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