A New Magazine for Students and Cultivated Readers. 



THE 



POPULAR SCIENCE MONTHLY, 



CONDUCTED BY 

 Professor E. L. YOUMANS. 



THE growing importance of scientific knowledge to all classes of the 

 community calls for more efficient means of diffusing it. THE POPULAR 

 SCIENCE MONTHLY has been started to promote this object, and supplies a 

 want met by no other periodical in the United States. 



It contains instructive and attractive articles, and abstracts of articles, 

 original, selected, and illustrated, from the leading scientific men of differ- 

 ent countries, "giving the latest interpretations of natural phenomena, ex- 

 plaining the applications of science to the practical arts, and to the opera- 

 tions of domestic life. 



It is designed to give especial prominence to those branches of science 

 which help to a better understanding of the nature of man ; to present the 

 claims of scientific education ; and the bearings of science upon questions 

 of society and government. How the various subjects of current opinion 

 are affected by the advance of scientific inquiry will also be considered. 



In its literary character, this periodical aims to be popular, without be- 

 ing superficial, and appeals to the intelligent reading-classes of the commu- 

 nity. It seeks to procure authentic statements from men who know their 

 subjects, and who will address the non-scientific public for purposes of ex- 

 position and explanation. 



It will have contributions from HERBERT SPENCER, Professor HUXLEY, 

 Professor TYNDALL, Mr. DARWIN, and other writers identified with specu- 

 lative thought and scientific investigation. 



THE POPULAR SCIENCE MONTHLY is published in a large 

 octavo, handsomely printed on clear type. Terms, Five Dollars per annum, 

 or Fifty Cents per copy. 



OPINIONS OF THE PRESS. 



" Just the publication needed at the present day." Montreal Gazette. 



" It is, beyond comparison, the best attempt at journalism of the kind ever made in thu 

 country." Hume Journal. 



" The initial number is admirably constituted." Evening Mail. 



" In our opinion, the right idea has been happily hit in the plan of this new monthly." 

 Buffalo Courier. _ 



" A journal which promises to be of eminent value to the cause of popular education in 

 this country." N. Y. Tribune. 



IMPORTANT TO CLUBS. 



THE POPULAR SCIENCE MONTHLY will be supplied at reduced rates with any periodi- 

 cal published in this country. 



Any person remitting Twenty Dollars for four yearly subscriptions will receive an ex- 

 tra copy gratis, or five yearly subscriptions for $20. 

 THE POPULAR SCIENCE MONTHLY and APPLETONS' JOURNAL (weekly), per annum, $8.00 



I3P* Payment, in all cases, must be in advance* 



Remittances should be made by postal money-order Dr check to the Publishers, 



j>. APPLETON & CO., 549 & 551 Broadway, Now York, 





