Herbert Spencer's Synthetic Philosophy. 



(l.)-FIRST PRINCIPLES. 



Part I. The Unknowable, | Part II. The Knowable. 



1 vol., 12mo, $2.00. 



(2.)-THB PRINCIPLES OF BIOLOGY. 



Vol. II. 



Vol. I. 



Part I. The Data of Biology. 

 " II. The Inductions of Biology. 

 " III. The Evolution of life. 



Part IV. Morphological Development 

 " V. Physiological Development. 

 " VI. Laws of Multiplication. 



2 vols., 12mo, $4.00. 



(3.)-THE PRINCIPLES OF PSYCHOLOGY. 



Vol. I. Vol. II. 



Part I. The Data of Psychology. Part V. Physical Synthesis. 



" II. The Inductions of Psychology " VI. Special Analysis. 

 " HI. General Synthesis. " VII. General Analysis. 



" IV. Special Synthesis. " VIII. Corollaries. 



2 vols., 12mo, $4.00. 



(4.) THE PRINCIPLES OF SOCIOLOGY. 



Vol.1. $2.00. 



Part I. The Data of Sociology. 

 " H. The Inductions of Sociology. 

 " HI. The Domestic Eolations. 



Vol. H. $2.00. 



Part IV. Ceremonial Institutions. 

 " V. Political Institutions. 

 " VI. Ecclesiastical Institutions. 



Vol. HI. (Parts VH and VIII.) (In preparation.) 



(5.)-THE PRINCIPLES OF MORALITY. 



Vol. I. 



Part I. The Data of Ethics $1.25 



Cheap edition, paper 50 



" H. The Inductions of Ethics. 



(In preparation.) 

 " HI. The Ethics of Individual 

 Life. (In preparation.) 



Part IV. The Ethics of Social Life : 



Justice $1.25 



" V. The Ethics of Social Life : 



Negative Beneficence. (In 



preparation.) 

 " VI. The Ethics of Social Life : 



Positive Beneficence. (In 



preparation.) 



Vol. n. (In preparation.) 



New York: D. APPLETON & CO., 1, 3, & 6 Bond Street. 



