Scientific Publications. 



MAN BEFORE METALS. By N. Jolt, Professor at the Science Faculty 



of Toulouse ; CoiTespouUeut of the Institute. With 148 Illustrations. 12mo. 

 Cloth, 11.75. 



"The discussion of man's ori';in and early history, by Professor De Quatrefajres, 

 formed one of the most useful volumes in the " luternatioual Scientific Series,'' and 

 the same collection is now further enriched by a popular treatise on paleontology, by 

 M. N. Joly, Professor in the Uuiversity of Toulouse. The title of the book, '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 us what man was, in respect of customs, industries, and 

 moral or religious ideas, before the use of metals was known to him." — iV«w York 

 Sun. 



" An interesting, not to say fascinating volume." — I^eiv York Churchman, 



ANIMAI. INTELI.IGENCE. By Geokge J. Romanks, P. E. S., Zoological 

 Secretary of the Linntean Society, etc. 12mo. Cloth, $1.T5. 

 " My object in the work as a whole is twofold : First, I have thouglit it desirable 

 that there should be something resembUng a text-book of the facts of Comparative 

 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 impor- 

 tant object is that of considering the facts of animal intelligenie in their relation to the 

 theory of descent." — From 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 \vithout supplying any commensurate discipline in 

 exact scientific reflection ; but the author has, we think, fully justified himself in his 

 modest preface. The resnlt is the appearance of a collection of facts Avhieh will be a 

 real boon to the student of Comparative Psycholofry for this is the first attempt to 

 present systematically well-assured observations on the mental life of animals."— <Sa<- 

 urday Beview. 



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

 the supposed gap between instinct and reason by the authentic proots here mar- 

 shaled of remarkable intelligence in some of the higher animals. It is the seemingly 

 conclusive evidence of reasoning powers furnished bj'the adaptation of means to ends 

 in cases which can not be explained on the theory of inherited aptitude or habit." — 

 New York Sun. 



THE SCIENCE OF POMTICS. 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 fi-om Plato and Aristotle in Greece, and Cicero in 

 Rome, to the modern schools in the Enclish field, not slighting the teachings of the 

 American Revolution or the lessons of the French Revolution of 1798. Forms of gov- 

 ernmvnt, political terms, the relation of law. written and unwritten, to the subject, a 

 codification from .Justinian to Napoleon in France 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 corporations to the state." — New York 

 Observer. 



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



