The Popular Science Monthly 



Entered in the Post Office in Lancattar, Fa., at seeioncL-«lass matter. 



CONTENTS OF APRIL NUMBER. 



On the Origin of Species. Professor Hugo de 

 Vkies. 



Mental and Moral Heredity in Royalty. Dr. Fred- 

 erick Adams Woods. 



The Great Auk in Art. Frank Bond. 



The Making of Biologists. Professor T. D. A. Cock- 



ERELL. 



The Relation of Malaria to Agriculture and Other 

 Industries of the South. Professor Glenn W. 

 Hebrick. 



The Habits of the Giant Salamander. Dr. Albert 

 M. Reese. 



The Carnegie Institution and the National Univer- 

 sity. Professor James Howard Gore. 



Biography in the Schools. Professor David R. 

 Major and T. H. Hainks. 



A Visit to the Quarry-cavea of Jerusalem. Charles 

 A. White. 



The Nile Dams and Reservoir. Sir Benjamin 

 Baker. 



Scientific Literature : 

 Chemistry. 



The Progress of Science : 



The Rockefeller Institute for Medical Research; 

 The Smithsonian Institution; The U. S. Depart- 

 ment of Agriculture; The Question of the Birth 

 Rate; The Rhodes Scholarships; The Censorship 

 of the Press in Russia ; A New Process of Color 

 Photography ; Scientific Items 



Index to Volume LXII. 



CONTENTS OF MAY NUMBER. 



The Classification of Fishes. President David Starr 

 Jordan. 



Stages of Vital Motion. O. F. Cook. 

 The Slavic Immigrant. Dr. Allan McLaughlin. 

 Obituary Notice of a Lung-Fish. Professor Basii- 

 FORD Dean. 



The Opportunity of the Smaller Museums of Natural 

 History. William Orr. 



College Entrance Examinations. Abraham Flex- 

 ner. 



A New Source of Heat : Radium. Dr. Henry Car- 

 rington Bolton. 



The Decrease in the Size of American Families. Pro- 

 fessor Edward L. Thorndike. 



Helen Keller : A Psychological Autobiography. 

 Professor Joseph Jastrow. 



Discussion and Correspondence : 



Professor Pearson on the Distribution of Fertility. 

 Edward L. Thorndike. 



Scientific Literature : 



Physiological Chemistry. 



The Progress of Science : 



William Hdrkness ; The American Society of 

 Naturalists; Race Senescence; The Field Colum- 

 bian Museum; The Treatment of Typhoid Fever; 

 The British Antarctic Expedition ; The New 

 York Forest and Game Commission ; Scientific 

 Items. 



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