The Popular Science Monthly 



Bntered in the Pott Office m Lancaster, Pa., at teeond-elatt matter. 



CONTENTS OF SEPTEMBER NUMBER 



Capacity of the United States for Population. Pro- 

 fessor Albert Perry Brigham. 



Peale's Museum. Dr. Harold Sellers Colton. 



The Theory of Individual Development. Professor 

 Prank. K. Lillie. 



The Origin of the Nervous System and its Appropri" 

 ation of Effectors Professor G. H. Parker. 



Another Mode of Species Forming. Luther Burbank- 



Henri Poincare and the French Academy. M. Fred" 



ERIC MASS0N. 



Collecting and Camping Afoot. A. S. Hitchcock. 



The Necessity for an International Language. Dr- 

 Ivy Kellerman. 



What is a Living Animal? How much of it is alive? 

 Dr. A. F. A. King. 



Abandoned Canals of the State of New York. Ely 

 Van de Warker. 



The Progress of Science : 



Tennyson and the Science of the Nineteenth Cen- 

 tury ; The Reminiscences of Sir Francis Galton ; 

 The Eugenics Laboratory of the University of 

 London ; The Inheritance of Vision ; Scientific 

 Items. 



CONTENTS OF OCTOBER NUMBER 



The Hudson-Fulton Celebration of 1909. Dr. George 

 Frederick Kunz. 



The Origin of the Nervous System and its Appropriation 

 of Effectors. Professor G. H. Parker. 



The Service of Zoology to Intellectual Progress. Profes- 

 sor William A. Locy. 



The Emmanuel Movement from a Medical View-point. 

 Dr. Homer Gage. 



The Atlantic Forest Eegion of North America. Spencer 

 Trotter. 



Latin vs. German. Professor Ralph H. McKee. 



The Last Census and its Bearing on Crime. The Rev. 

 August Drahms. 



Simple Lessons from Common Things. Professor Fran- 

 cis E. NlPHER. 



The Progress of Science : 



The Winnipeg Meeting of the British Association for 

 the Advancement of Science ; Science and Adventure ; 

 The Population of the United States ; Scientific Items. 



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