D. APPLETON & CO.'S PUBLIOATIONS. 



MAN BEFORE METALS. By N. Joly, Professor at the Science 

 Faculty of Toulouse; Correspondent of the Institute. With 148 H. 

 lustrations. 12mo. Cloth, $1.75. 



" The discussion of man's origin and early history, by Professor De Qnatre- 

 fages, formed one of the most useful volumes in the * International ScientiQc 

 Series,' and the same collection is now further enriched hy a popular treatise on 

 paleontology, by M. N. Joly, Professor in the University of Toulouse. The title 

 of the hook, ' Man before Metals,' indicates the limitations of the writer's theme. 

 His object is to bring together the numerous proofs, collected by modern research, 

 of the great age of the human race, and to show ue what man was, in respect of 

 customs, industries, and moral or religious ideas, before the use of metals was 

 knowD to him." — New York Sun. 



" An interesting, not to say fascinating volume."— iVca; York Churchman. 



ANIMAI. INTELLIGENCE. By George J. Romanes, P. R. S., 

 Zoological Secretary of the Linniean Society, etc. 12mo. Cloth, $1.75. 



" My olSject in the work as a whole is twofold : First, I have thought it de- 

 Dirable that there should be something resembling a text-book of the facts of Com- 

 paralive Psychology, to which men of science, and also metaphysicians, may turn 

 whenever they have occasion to acquaint themselves with the particular level of 

 intelligence to which this or that species of animal attains. My second and much 

 more important object is that of consideriug the facts of animal inteUigence in 

 their relation to the theory of descent."— i'rom the Preface, 



" Unless we are greatly mistaken, Mr. Romanes's work will take its place as 

 one of the most attractive volumes of the ' International Scientific Series.' Some 

 persons may, indeed, be disposed to say that it is too attractive, that it feeds the 

 popular taste for the curious and marvelous without supplying any commensurate 

 discipline in exact scientific reflection ; but the author has, we think, fully justi- 

 fied himself in his modest preface. The result is the appearance of a collection 

 of facts which will be a real boon to the student of Comparative Psychology, for 

 this is the first attempt to present systematically well-assured observations on the 

 mental life of animals."— aaiarrfay Beview. 



" The author believes himself, not without ample cause, to have completely 

 bridged the supposed gap between instinct and reason by the authentic proo^ 

 here marshaled of remarkable intelligence in some of the higher animals. It is 

 the seeminely conclusive evidence of reasonina powers furnished by the adapta- 

 tion of means to ends in cases which can not be explained on the theory of in- 

 herited aptitude or habit."— iV«u; York Sun. 



THE SCIENCE OF POLITICS. By Sheldon Amos, M. A., author 

 of "The Science of Law," etc. 12mo. Cloth, $1.75. 



" To the political student and the practical statesman it ought to be of great 

 value."— New York Herald. 



" The author traces the subject from Plato and Aristotle in Greece, and Cicero 

 in Rome, to the modern schools in the English field, not Blighting the teachings 

 of the American Revolntion or the lessons of the French Revolution of 1793. 

 Forms of government, political terms, the relation of law, written and unwritten, 

 to the subject, a codification from Justinian to Napoleon in Fr.ance and Field in 

 America, are treated as parts of the subject in hand. Necessarily the subjects of 

 executive and legislative authority, police, liquor, and land laws are considered, 

 and the question ever growing in importance in all countries, the relations of cor- 

 porations to the state." — New York Obeeroer. 



New York: D. APPLETOil & C0../1,^& B Bond Street 



