The Popular Science 



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



CONTENTS OF SEPTEMBER NUMBER 



Palm and Sole Impressions and their Use for Pur- 

 poses of Personal Identification: Professor 

 Harris Hawthorne Wilder. 



Some of the Extra-artistic Elements of Esthetic Emo- 

 tion. John Cotton Dana. 



Karl Lamprecht und Kulturgeschichte. Professor 

 Wm. E. Dodd. 



Pulse and Rhythm. Mary Hallock. 



Theories of Sleep. Dr. Percy G. Stiles. 



Hertzian Wave Wireless Telegraphy. Dr. J. A. Flem- 

 ing. 



Mosquitoes and Suggestions for their Extermination. 

 William Lyman Underwood. 



Shorter Articles and Discussion : 



The Ascending Obelisk of Montague PeltSe ; Pro- 

 fessor Angelo Heilprin. Professor Shaler on 

 Animal Intelligence : Dr. Eug. L. Fisk. 



Scientific Literature : 



The Collected Papers of Rowland and FitzGerald . 



The Progress of Science : 



John Ericsson : The Massachusetts Institute of 

 Technology ; Summer Laboratories and Schools; 

 Scientific Items. 



CONTENTS OF OCTOBER NUMBER 



The Decorative Art of the North American Indians. 

 Professor Franz Boas. 



Highways and Byways of Animal Life. Professor 

 Herbert Osborn. 



The Correlaiion between Mental and Moral Quali- 

 ties. Dr. Frederick Adams Woods. 



Cooperation, Coercion, Competition. Professor 



LiNDLEY M. KeASBEY. 



The Sherman Principle in Rhetorie and its Restric- 

 tions. Dr. Robert E. Moritz. 



Educational Endowments in the South. Elizabeth 



M. Howe. 

 Hertzian Wave Wireless Telegraphy. Professor J. 



A. Fleming. 

 Shorter Articles and Discussion : 



An Unusual Aurora Borealis; Dr. A. F. A. King, 



Science and Philosophy. 



The Progress of Science : 



The British Association for the Advancement of 

 Science; Sir Norman Lockyer on the Endow- 

 ment of Education and Research ; The School of 

 Journalism of Columbia University; Scientific 

 Items. 



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