WORKS OP HERBEET SPENCER, 



PUBLISHED BY 



D. APPLETON AUSTD COMPANY, 



SYSTEM OF PHILOSOPHY 



I. FIRST PRINCIPLES. 

 (New and Enlarged Edition.) 

 PART {. THE UNKNOWABLE. 

 P.4B\ II. LAWS OP THE KNOW ABLE. 



569 pages. Price, - - - - - - $2.50 



II. THE PRINCIPLES OF BIOLOGY. VOL. I. 

 PART T. THE DATA OF BIOLOGY. 

 PART II. THE INDUCTIONS OP BIOLOGY. 

 PART III. THE EVOLUTION OP LIFE. 



475 pages. Price, ......... $2.50 



PRINCIPLES OF BIOLOGY. VOL. II. 

 PART IV. MORPHOLOGICAL DEVELOPMENT. 

 PART V. PHYSIOLOGICAL DEVELOPMENT. 

 PART VI. LAWS OF MULTIPLICATION. 



565 pages. Price, $2.50 



III. THE PRINCIPLES OF PSYCHOLOGY. 



PART I. THE DATA OP PSYCHOLOGY. 144 pages. Price, . . $0.75 



PART II. THE INDUCTIONS OP PSYCHOLOGY. 146 pages. Price, - $0.75 

 PART III. GENERAL SYNTHESIS. 100 pages. ) -p . 



PART IV. SPECIAL SYNTHESIS. 112 pages. j-*rice, - - $1.00 



MISCELLANEOUS. 



I. ILLUSTRATIONS OF UNIVERSAL PROGRESS. 



THIRTEEN ARTICLES. 451 pages. Price, - - . - - $2.50 



II ESSAYS : 



MORAL, POLITICAL, AND ^ESTHETIC. 

 TEN ESSAYS. 386 pages. Price, $2.50 



III. SOCIAL STATICS: 

 OR THE CONDITIONS ESSENTIAL TO HUMAN HAPPINESS SPECIFIED, AND THE 



FIRST OF THEM DEVELOPED. 

 583 pages. Price, .$2.50 



IV. EDUCATION : 



INTEILECTUAL, MORAL, AND PHYSICAL. 



888 pages. Price, $1.25 



V. CLASSIFICATION OF THE SCIENCES. 

 50 pages. Price, ... ..... $0.25 



VI. SPONTANEOUS GENERATION, &c. 

 i6 pages Price. . ... $0.26 



