"It is a book for all men and for all time. In its pages the thinker may trace, step by step, the synthesis of synthetic philosophy. Here the poet will find not only a worthy inspiration, but a possibly surprising vein of sympathy. The statesman, the inventor, the litterateur, the man of theory, and the man of practice will find alike, within the covers of these two massive volumes, an almost inexhaustible treasury of interest and constructive thought. There is suggestion and instruction for all the world, and an almost indefinable fascination—whether it be due to the mere intrinsic beauty of the picture itself, or to the dignity of its execution, or to the sense of its almost laborious faithfulness, or to the combined attraction of all three."—St. James's Gazette. —A SYSTEM OF SYNTHETIC PHILOSOPHY— Vol. I. First Principles. With an Appendix and a Portrait. Finally revised. New Edition, large crown 8vo, cloth. 7s. 6d. Vols. II. and III. The Principles of Biology. 6th Thousand. 8vo, cloth. Revised and greatly enlarged. Vols. I. and II. 18s. each. Vols. IV. and V. The Principles of Psychology. 5th Thousand. 2 vols. 8vo, cloth. 36s. Vol. VI. The Principles of Sociology. Vol. I. Part I, The Data of Sociology; Part 2, The Inductions of Sociology; Part 3, Domestic Institutions. 4th Thousand, revised and enlarged. 8vo, cloth. 21s. Vol. VII. The Principles of Sociology. Vol. II. Part 4, Ceremonial Institutions; Part 5, Political Institutions. 3rd Thousand. 8vo, cloth. 18s. Vol. VIII. The Principles of Sociology. Vol. III. Part 6, Ecclesiastical Institutions; Part 7, Professional Institutions; Part 8, Industrial Institutions. 2nd Thousand. 8vo, cloth. 16s. Vol. IX. The Principles of Ethics. Vol. I. Part I, The Data of Ethics; Part 2, The Inductions of Ethics; Part 3, The Ethics of Individual Life. 2nd Thousand. 8vo, cloth. 15s. Vol. X. The Principles of Ethics. Vol. II. Part 4, Justice; Part 5, Negative Beneficence; Part 6, Positive Beneficence; Appendices. Demy 8vo, cloth. 12s. 6d. [32] Also to be had separately: SPENCER (HERBERT). DATA OF ETHICS. Reset uniform with popular edition of "First Principles." Sewed, 2s. 6d. net; cloth, 3s. net. —JUSTICE. Being Part 4 of the Principles of Ethics. 2nd Thousand. 8vo, cloth. 6s. Other Works. —THE STUDY OF SOCIOLOGY. Library Edition (21st Thousand), with a Postscript. 8vo, cloth. 10s. 6d. —DATA OF ETHICS. Small Demy 8vo, cloth. 3s. net; sewed, 2s. 6d. net. —EDUCATION: Intellectual, Moral, and Physical. Cheap Edition. Entirely reset. 46th Thousand. Crown 8vo, cloth. 2s. 6d. —ESSAYS: Scientific, Political, and Speculative. A new Edition, rearranged, with additional Essays. 3 vols. 8vo, cloth. (Each 10s.) 30s. —SOCIAL STATICS. Abridged and revised, together with "The Man v. The State." 8vo, cloth. 10s. —VARIOUS FRAGMENTS. Uniform in Library binding. Demy 8vo, cloth. Enlarged Edition. 6s. —FACTS AND COMMENTS. Demy 8vo, cloth. 6s.