The Popular Science 



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



CONTENTS OF THE NOVEMBER NUMBER 



A Round-the- World Botanical Excursion. Professor 

 Charles J. Chamberlain. 



Some Aspects-of Anaphylaxis. Dr. John Auer. 



The Permanence of Interests and their Relation to 

 Abilities. Professor Edward L. Thorndike. 



China's Great Problem. Professor Thomas T. Read. 



Modern Warfare against Grasshoppers. Professor 

 F. L. Washburn. 



The Relation of Eugenics to Euthenics. Professor 

 Leon J. Cole. 



Negroes who owned Slaves. 



The Administrative Peril in Education. Professor 

 Joseph Jastrow. 



The Progress of Science : 



The Dedication of the New York State Educa- 

 tional Building : Vital Statistics and the Decreas- 

 ing Death Rate ; Scientific Items. 



CONTENTS OF THE DECEMBER NUMBER 



The Evolution of the Dollar Mark. Professor Florian 



Cajori. 

 Practical Forestry Explained. General C . C. Andrews. 



Insects as Agents in the Spread of Disease. Charles 

 T. Brues. 



The Genesis of Individual and Social Surplus. Pro- 

 fessor Alvan A. Tenney. 



Rising Prices and the Public. Professor John Bauer. 



The Function of the American Collage. Professor A. 

 K. Rogers. 



Reforming the Calendar. Oberlin Smith. 



Basil Valentine : A Seventeenth-century Hoax. Pro- 

 fessor John Maxson Stillman. 



The Hindu-Arabic Numerals. Professor Edmund 

 Raymond Turner. 



The Progress of Science : 



Award of the Nobel Prize in Medicine ; Vital Sta- 

 tistics and the Decreasing Death Rate ; Dr. Lewis 

 Boss. Scientific Items. 



Index to Volume LXXXI. 



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