The Popular Science Monthly 



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



CONTENTS OF THE DECEMBER NUMBER 



The Evolution of the Dollar Mark. Professor Florian 

 Cajori. 



Practical Forestry Explained. General C . C. Andrew*. 



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 College. 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 LXXXL 



CONTENTS OF THE JANUARY NUMBER 



Going through Ellis Island. Dr. Alfred C. Reed. 



Some Impressions of the Flora of Guiana and Trini- 

 dad. Professor Douglas Houghton Campbell. 



A Grain of Wheat. Professor R. Chodat. 



The Inheritance of Acquired Characters. Dr. Leland 

 Griggs. 



Canst Thou Minister to a Mind Diseased? Dr. Smith 

 Baker. 



*he Position of Women in China. Dr. L. Pearl Boggs. 



The Socialization of the College. Professor Walter 

 Libby. 



Modern Scientific Thought and Its Influence on 

 Philosophy. Professor Harry Beal Torrey. 



The Progress of Science: 



The Cleveland Meeting of the American Associa- 

 tion for the Advancement of Science ; The 

 Spread of Infantile Paralysis; Scientific Items. 



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