HERBERT SPENCER'S WORKS.— {Continued) 



Education : Intellectual, Moral, and Physical. 12mo. Cloth, 

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First Principles. l2mo. Cloth, $2.00. 



Essays : Moral, Political, and ^Esthetic. 12mo. Cloth, $2.00. 



Illustrations of Universal Progress. A Selection of 



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Social Statics ; or, the Conditions Essential to Human Hap- 

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The Principles of Biology. Two vols., i2mo. Cloth, 



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The Principles of Psychology. Two vols., l2mo. 



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Recent Discussions in Science, Philosophy, and 



Morals. New and enlarged edition. 12mo. Cloth, 

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Data of Ethics. Vol. I of "The Principles of Ethics." 

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Philosophy of Style. 12mo. Flexible cloth, 50 cents. 



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