"Mr. Spencer has thoroughly studied the issues which are behind the social and political life of our own time, not exactly those issues which are discussed in Parliament or in Congress, but the principles of all modern government, which are slowly changing in response to the broader industrial and general development of human experience. One will obtain no suggestions out of his book for guiding a political party or carrying a point in economics, but he will find the principles of sociology, as they pertain to the whole of life, better stated in these pages than he can find them expressed anywhere else. It is in this sense that this work is important and fresh and vitalizing. It goes constantly to the foundation of things."--_Boston Herald_. VARIOUS FRAGMENTS, 12mo. Cloth, $1.25. Along with a considerable variety of other matter, these "Fragments" include a number of replies to criticisms, among which will be found some of the best specimens of Mr. Spencer's controversial writings, notably his letter to the London _Athenæum_ on Professor Huxley's famous address on Evolutionary Ethics. His views on copyright, national and international, "Social Evolution and Social Duty," and "Anglo-American Arbitration," also form a part of the contents. EDUCATION: Intellectual, Moral, and Physical. 12mo. Paper, 50 cents; cloth, $1.25. CONTENTS: What Knowledge is of most Worth? Intellectual Education. Moral Education. Physical Education. THE STUDY OF SOCIOLOGY. The fifth volume in the International scientific Series. 12mo. Cloth, $1.50. CONTENTS: Our need of it. Is there a Social Science? Nature of the Social Science. Difficulties of the Social Science. Objective Difficulties. Subjective Difficulties, Intellectual. Subjective Difficulties, Emotional, The Educational Bias. The Bias of Patriotism. The Class Bias. The Political Bias. The Theological Bias. Discipline. Preparation in Biology. Preparation in Psychology. Conclusion. THE INADEQUACY OF "NATURAL SELECTION." 12mo. Paper, 30 cents. This essay, in which Professor Weismann's theories are criticised, is reprinted from the _Contemporary Review_, and comprises a forcible presentation of Mr. Spencer's views upon the general subject indicated in the title. D. APPLETON AND COMPANY, NEW YORK. * * * * * PIONEERS OF SCIENCE IN AMERICA. Sketches of their Lives and Scientific Work. Edited and revised by WILLIAM JAY YOUMANS, M.D. With Portraits. 8vo, Cloth, $4.00.