SCIENCE-ADVERTISEMENTS 



The Popular Science Monthly 



Entered in the Post 



Lancaster, Pa., as second-class matter. 



CONTENTS OF THE JANUARY NUMBER 



The Mechanism of Heredity as indicated by the In- 

 heritance of Linked Characters. ProfeBsor T. 

 H. Morgan. 



The Present Stattis of Cancer Research. Dr. Leo 

 Loeb. 



Psychology : Science or Techology. E. B. Titchener, 



The Illinois System of Permanent Fertility. Pro- 

 fessor Cyril G. Hopkins. 



Chabanean : 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. 



Tie Struggle for Equality in the United States. Pro- 

 fessor Charles F. Emerlck. 



The Democratic Organization of a State Unlyenity. 

 Professor Joseph K. Hart. 



The Progress of Science . 



The Aaniversary Meeting of the Koyal Society ; 

 A Celestial Sphere in a Natural History Moseani; 

 Scientific Items. 



CONTENTS OF THE FEBRUARY NUMBER 



The 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 Keyes. 



The Struggle for Equality in the United States. Dr. 

 Charles F. 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. 



CONTENTS OF THE MARCH NUMBER 



The Origin of the Flocking Habit of Migratory Birds. 

 Professor C. C. Trowbridge. 



Water. Dr. E. P. Wightman. 



Psychotherapy in Folk-medicine. Dr. Abram Lipsky . 



The Struggle for Equality In United States. Pro- 

 fessor Charles F. Emerick. 



The Question of Agricultural Population. Arland 

 D. Weeks. 



The Effects of School Life upon the Nutritive Pro- 

 cesses, Health and the Composition of the Blood. 



The Physical Beethoven. Dr. James Frederick 

 Rogers. 



The World versus Matter. Wm.E. Ritter. 



The Automobile and the Public Health. Dr. P. 6. 

 Heinemann. 



Tropical Nature in Colombia. Professor A. S Peajse. 



The Progress of Science: 



Work in Engineering at Harvard University and 

 the Massachusetts Institute of Technology ; Track 

 Scale Testing Equipment of the Bureau of Stan- 

 dards; Scientific Items. 



CONTENTS OF THE APRIL NUMBER 



Fresh Air. Professor Frederic S. Lee. 



Nature Play. Professor Charles Lincoln Edwards. 



Recent Developments in Weights and Measures in 

 the United States. Louis A. Fischer. 



The Struggle for Equality in the United States. Pro- 

 fessor Charles F. Emerick. 



Eugenics and Euthenics. Professor Maynard M. 

 Metcalf. 



The Psychological Limit of Eugenics. Professor 

 Herbert Adolphus Miller. 



The Racial Origin of Successful Americans. Dr. 

 Frederick Adams Woods. 



Darwin and Wallace on Sexual Selection and Warn- 

 ing Coloration. Professor F. H. Pike. 



The Progress of Science : 



Mortality Statistics of the United States; The 

 Work in Terrestrial Magnetism of the Carnegie 

 Institution ; Scientific Item. 



Single Numbers 30 Cents Yearly Subscription, $3.00 



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