Appletons* 

 Popular Science Monthly. 



Edited by WILLIAM JAY YOUMANS. 



The "Popular Science {Monthly is without a 

 competitor. 



It is not a technical magazine. 



It stands alone as an educator, and is the 

 best periodical for people who think. 



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 are written in such a manner as to be readily 

 understood. 



It deals particularly with those general 

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It keeps its readers fully informed of all 

 that is being done in the broad field of science. 



Illustrations, from drawings or photo- 

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 the text may be thereby elucidated. 



Examination of any recent number will 

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