The Popular Science Monthly 



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



CONTENTS OF THE JANUARY NUMBER 



The Mechanism of Heredity as indicated by the In- 

 heritance of Linked Characters. Professor T. 

 H. Morgan. 



The Present Status of Cancer Research. Dr. Leo 

 Loeb. 



Psychology : Science or Techology. E. B. Titchener 



The Illinois System of Permanent Fertility. Pro- 

 fessor Cyril G. Hopkins. 



Chabaneau : an Early Worker on Platinum, Pro- 

 fessor Jas. Lewis Howe. 



The Biologist's Problem. Professor T. D. A. Cockerell, 



A Comparison of White and Colored Children meas- 

 ured by the Binet Scale of Intelligence. Dr. 

 Josiah Morse. 



The Struggle for Equality in the United States. Pro- 

 fessor Charles F. Emerick. 



The Democratic Organization of a State University. 

 Professor Joseph K. Hart. 



The Progress of Science . 



The Anniversary Meeting of the Royal Society ; 

 ■ A Celestial Sphere in a Natural History Museum; 

 Scientific Items. 



CONTENTS OF THE FEBRUARY NUMBER 



T e Physical Laboratory and its Contributions to 

 Civilization. Professor Arthur Gordon Webster. 



The Origin and Evolution of the Nervous System. 

 Professor G. H. Parker. 



Current Progress in the Study of Natural Selection* 

 Dr. J. Arthur Harris. 



The Hibernation of Certain Animals. The Late 



Walter L. Hahn. 

 Some Abnormalities in Apple Variation. W. J 



Young. 

 Science and Poetry. Dr. Charles W. Super. 



The Rural Opportunity and the Country School. 

 Joseph Woodbury Strout. 



Early Geological Work of Thomas Nuttall. Dr. 



Charles Key es. 

 The Struggle for Equality in the United States. Dr. 



Charles P. Emerick. 



The Progress of Science : 



The Atlanta Meeting of the American Associa- 

 tion for the Advancement of Science ; The Work 

 of the Council of the Association ; The Address 

 of the President ; Scientific Items. 



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