The Popular Science Monthly 



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



CONTENTS OF MARCH NUMBER 



Insects and Entomologists, Their Eelations to the Com- 

 munity at Large. Professor John B. Smith. 



The Second Law of Thermodynamics, its Basis in In" 

 tuition and Common Sense. Professor W. S' 

 Franklin. 



Climate In Some of its Relations to Man. Professor 

 Robert DeC. Ward. 



The Structure of the World-stuff. Professor Horace 

 Clark Richards. 



The Relation of the Law to Public Health. Alfred 

 Hayes, Jr. 



International Coinage. Theo. F. Van Wagener. 



The Hubbard Glacier, Alaska. Professor Lawrence 

 Martin. 



The Progress of Science : 



The Work of the Carnegie Institution ; The Life'of 

 Peter Lesley ; Scientific Items. 



CONTENT8 OF THE APRIL NUMBER 



Laws of Diminishing Environmental Influences. Dr 



Frederick Adams Woods. 

 The Leading School of Tropical Medicine. Dr. Edward 



Nelson Tobey. 

 The Growth of a Language. Dr. Charles W. Super. 

 The Denominational College. Dr. Ivy Kellerman. 

 The Trial of an Old Greek Corn-ring. Dr. Frederics 



Earle Whitaker. 

 The Population of the United States. Professor James 



S. Stevens. 

 Preservation of the Fisheries on the High Seas. Dr. 



Charles Hugh Stevenson. 

 The Research Work of the Tortugas Laboratory. Dr. 



Alfred Goldsborough Mayer. 

 The Progress of Science : 



Incorporated Charities ; The Carnegie Foundation 



for the Advancement of Teaching ; Amos Emerson 



Dolbear ; Scientific Items. 



g@° The MONTHLY will be sent to new subscribers for six months for One Dollar. 



SUBSCRIPTION ORDER 



To THE SCIENCE PRESS, 



Publishers of THE POPULAR SCIENCE MONTHLY, 

 Sub-Station 84, New York City. 



Please find enclosed check or money order for three dollars, subscrip- 

 tion to THE POPULAR SCIENCE MONTHLY for one year, beginning 

 May, 1910. 



Please find enclosed from a new subscriber one dollar (sent at your 

 risk), subscription for six months to THE POPULAR SCIENCE 

 MONTHLY, beginning May, 1910. 



Name- 



Address— 



Single Numbers 30 Cents Yearly Subscription, $3.00 



THE SCIENCE PRESS 



Garrison-on-Hudson, N. Y. 



41 North Queen St., Lancaster, Pa. 



Sub-Station 84; NEW YORK 



Press of The New Era Printing Company 



