The Popular Science Monthly 



Sntered in the Post Office in Lancaster, Fa., as seeond-elasa matter. 



CONTENTS OF NOVEMBER NUMBER 



The Renaissance of Science. Dk. Edward S. Holden 



Life in Other Worlds. De. F. J. Allen. 

 The New West Point. William J. Roe. 

 A Laboratory for the Study ot Marine Zoology in the 



Tropical Atlantic. Dk. Alfred Goldsborough 



Mayer. 



The Parent- stream Theory of the Return of Salmon. 

 President David Stark Jordan. 



Hertzian Wave Wireless Telegraphy. Dr. J. A. Flem- 

 ing. 



The Bright Side of Russian Immigration. Dr. Allan 

 McLaughlin. 



The Influence of Brain-power on History. 



MAN LOCKYER. 



Sir Nor- 



Shorter Articles and Discussion : 



The Aurora Borealis of August 21: Dr. Alexander 

 Graham Bell; Mr. Cook on Evolution, Cytol- 

 ogy and Mendel's Laws; Professor E. B. Wilson. 



The Progress of Science : 



The College of the City of New York ; Aerial 

 Navigation ; Scientific Items. 



CONTENTS OF DECEMBER NUMBER 



Recent Theories in regard to the Determination of 

 Sex. Professor T. H. Morgan. 



The Academy of Science of St. Louis. Professor 

 William Trelease. 



The Tetrahedral Kites of Dr. Alexander Graham 

 Bell. Gilbert H. Grosvenor. 



Hertzian Wave Wireless Telegraphy. Dr. J. A. 

 Fleming. 



The Salmon and Salmon Streams of Alaska. Presi- 

 dent David Starr Jordan. 



The Storm Center in the Balkans. Dr. Allan Mc- 

 Laughlin. 



The Growth of Rural Population. Frank T. Carl- 

 ton. 



Rear-Admiral G. W. Melville, U. S. N., and Applied 

 Science in Construction of the New Fleet. The 

 late Professor R. H. Thurston. 



Shorter Articles and Discussion : 



An Unusual Aurora Borealis ; Jas. Lewis Howe, 

 W. C. Kendall. 



The Progress of Science : 



Robert Henry Thurston; Internatioaal Educa* 

 tion; Physical and Mental Heredity; Scientific 

 Items. 



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