THE 



POPULAR SCIENCE MONTHLY. 



CONDUCTED BY E. L AND W. J. YOUMANS. 



THE POPULAR SCIENCE MONTHLY will continue, as heretofore, to sup- 

 ply its readers with the results of the latest investigation and the most 

 valuable thought in the various departments of scientific inquiry. 



Leaving the dry and technical details of science, "which are of chief 

 concern to specialists, to the journals devoted to them, the MONTHLY 

 deals with those more general and practical subjects which are of the 

 greatest interest and importance to the public at large. In this work 

 it has achieved a foremost position, and is now the acknowledged organ 

 of progressive scientific ideas in this country. 



The wide range of its discussions includes, among other topics : 

 The bearing of science upon education ; 



Questions relating to the prevention of disease and the improvement 

 of sanitary conditions ; 



Subjects of domestic and social economy, including the introduction 

 of better ways of living, and improved applications in the arts of every 

 kind ; 



The phenomena and laws of the larger social organizations, with the 

 new standard of ethics, based on scientific principles ; 



The subjects of personal and household hygiene, medicine, and archi- 

 tecture, as exemplified in the adaptation of public buildings and private 

 houses to the wants of those who use them ; 



Agriculture and the improvement of food-products ; 



The study of man, with what appears from time to time in the depart- 

 ments of anthropology and archaeology that may throw light upon the 

 development of the race from its primitive conditions. 



"Whatever of real advance is made in chemistry, geography, astron- 

 omy, physiology, psychology, botany, zoology, paleontology, geology, or 

 such other department as may have been the field of research, is recorded 

 monthly. 



Special attention is also called to the biographies, with portraits, of 

 representative scientific men, in which are recorded their most marked 

 achievements in science, and the general bearing of their work indicated 

 and its value estimated. 



Terms: $5.00 per annum, in advance. 



The New York Medical Journal and The Popular Science 

 Monthly to the same address, $9.00 per annum (full price, 

 $10.00). 



New York : D. APPLETON & CO., 1, 3, & 5 Bond Street. 



