The Popular Science Monthly 



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



CONTENTS OF THE AUGU8T NUMBER 



The Significance oi Tropisms for Psychology. Dr. 

 Jacques Loeb. 



Feeling in the Interpretation of Nature; Professor 

 William E. Ritter. 



The Typhoid Fly on the Minnesota Iron Range. Pro- 

 fessor F. L. Washburn. 



What Makes a College ? Professor A. B. Wolfe. 



The University in Politics. Professor T. D. A. Cock- 

 erell. 



The Classification of the Sciences. Dr. Ira Woods 

 Howerth. 



Francis Galton. Dr. J. Arthur Harris. 



The Origin of Luminous Meteor Trains. Dr. C. C. 

 Trowbridge. 



The Progress of Science : 



The Extension of the American Museum of 

 Natural History ; The Protection of the Fur Seal; 

 Scientific Items. 



C0NTENT8 OF THE SEPTEMBER NUMBER 



The Bureau of Standards. Professor Henry S. Car- 

 hart. 



On the History of Internal Medicine. Dr. John 

 Benjamin Nichols. 



Scisnce and Social Progress. Dr. Frederick A. 

 Bushee. 



Attempts to explain Gravitation. Wilson C. Morris. 



The Purpose and Some Principles of Systematic 

 Zoology. Hubert Lyman Clark. 



The Narrowing Circle of the Animal Kingdom. 

 Thos. D. Eason. 



Food Preparation and its Relation to the Develop- 

 ment of Efficient Personality in the Home- 

 Laura Clarke Rockwood. 



The Constitutional Conservatism of Women. Dr. 

 Otto Charles Glaser. 



Floating Islands. Sidney Powers. 



The Progress of Science : Charles Otis Whitman ; The 

 American Geographical Society ; Scientific Items. 



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