WOEKS OF HEKEERT SPENCEi; 



PDDLISIIED BT 



D A^PPLETOlSr AISTD COMPAISTY. 



SYSTEM OF PHILOSOPHY 



I.— FIRST PRIXCIPLES. 



{^^cw and Enlarged Edition.) 



fivi L — The Unknowable. 



r*KA 11.— Laws of the K:i0WABLE. 



S59 pages. Price, • \1Vi 



II.— THE PRIXCIPLES OF BIOLOGY.— VOL. L 



PjE7 I. — The Data op Biology. 

 Part it. — The Inductions of Biology. 

 Part III. — The Evolution op Life. 



475 pages. Price, |2.50 



PRINCIPLES OF BIOLOGY.— VOL. IL 



Part IV. — Morphological Detelopment. 

 Pari V. — Physiological Development. 

 Pari VL — Laws of Multiplication. 



565 pages. Price, |2.50 



III.— THE PRINCIPLES OF PSYCHOLOGY. 



Pari I. — The Data of Psychology. 144 pages. Price, . • $0.75 



Part II. — The Inductions of Psychology. 146 pages. Price, - $0.78 



Part III. — General Synthesis. 100 pages. ) p . *i nn 



Part IV.— Special Synthesis. 112 pages. f ^ rice, . . fl.OO 



, . « 



MISCELLANEOUS. 



I.— ILLUSTRATIONS OF UNF^TERSAL PROGRESS. 

 Thirteen Articles. 451 pages. Price, . « , - . $2.50 



IL— ESSAYS ; 



Moral, Political, and .Esthetic. 



T»N EssAYa. 886 pages. Price, ... - . $2.60 



III.— SOCIAL STATICS: 



Ob thk Conditions Essential to Human Happiniss Specified, aihj rns 



First of them Developed. 

 »88 pages. Price, $2.6C 



IV.— EDUCATION : 



Intei lectual. Moral, and Physical. 

 W8 pages. Price, $1.25 



v.— CLASSIFICATION OF THE SCIEN'CES. 

 W pages. Price, ... - .... |0.2R 



VI.— SPONTANEOUS GENERATION, &c. 

 1 6 pages Price, . . ... $0,28 



