D. APPLETON & CO.'S PUBLICATIONS. 

 TDECENT ECONOMIC CHANGES, and their Ef^ 



'*■ ^ feet on the Production and Distribution of Wealth and the 

 Well-being of Society. By DAVID A. Wells, LL. D., D. C. L., 

 Membre Correspondant de I'Institut de France; Correspou- 

 dente Regia Accademia dei Lincei, Italia; Honorary Fellow 

 Royal Statistical Society, G. B, ; late United States Special 

 Commissioner of Revenue; and President American Social 

 Science Association, etc. I2mo. Cloth, $2.00. 

 The readers of "The Popular Science Monthly" will remember the interesting 

 series of papers communicated to its pages during the years 1887 and 1888 by Mr. 

 David A. Wells ; in which were traced out, and exhibited in something like regular 

 order, the causes and extent of the wonderful industrial and social changes and accom- 

 panying disturbances which have especially characterized the last fifteen or twenty 

 years of the world's history. Since their original publication in the Science Monthly, 

 these papers have been in great part rewritten by the author, and brought down to the 

 latest date, and are now presented in one convenient volume. 



/I STUDY OF MEXICO. By David A. Wells. 



-^^ Reprinted, with Additions, from "The Popular Science 

 Monthly." i2mo. Cloth, $1.00; paper, 50 cents. 

 "The interest and discussion the papers have excited, both in the United States 

 and Mexico, have been such, and the desire on the part of the people of the former 

 counti-y, growing out of recent political complications, to know more about Mexico, 

 has become so general and manifest, that it has been thought expedient to republish 

 and offer them to the public in book-form — subject to careful revision, and with extensive 

 additions, especially in relation to the condition and wages of labor and the industrial 

 resources and productions of Mexico." — From the Preface. 



y^HINGS NOT GENERALLY KNOWN; A 



-/ Popular Hand-Book of Facts not readily accessible in Litera- 

 ture, History, and Science. Edited by David A. Wells. 

 i2mo. Cloth, $1 75. 

 "The general idea of the work will be readily gathered from its title and from a 

 glance at its contents. It contains many little items of information, gathered from the 

 broad fields of literature, history, and science, which are not contained in cyclopaedias 

 and ordinary hand-books, and which are not readily found when sought. In the de- 

 partments of Physical and Natural Sciences, moreover, are contained many interesting 

 results of modern research, of too recent date to have found a place in ordinary scien- 

 tific treatises. In a word, while this volume has little or no claim to a strictly scientific 

 character, it is believed that it will be found at once interesting and instructive." 



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



