tf Herbert Spencer published by D. Applcton & Co 

 A NEW SYSTEM OF PHILOSOPHY. 



PRINCIPLES OF BIOLOGY. 



TMs work is now in course of publication in quarterly numbers (from 80 

 to iQO pages each), by subscription, at $2 per annum. It is to form two vol 

 umes, of which the first is nearly completed, four numbers having been 

 issued. While it comprises a statement of those general principles and laws 

 of life to which science has attained, it is stamped with a marked originality, 

 both In the views propounded and in the method of treating the subject. It 

 will be a standard and invaluable work. Some idea of the discussion may 

 be formed by glancing over a few of the first chapter headings. 



PART FIRST. DATA OF BIOLOGY. 



I. Organic Matter; II. The actions of Forces on Organic Matter; III 

 The Reactions of Organic Matter on Forces ; IV. Proximate Definition of 

 Life ; V. The Correspondence between Life and its Circumstances ; VI. The 

 Degree of Life Varies with the Degree of Correspondence ; VII Scope of 

 Biology, 



PART SECOND. INDUCTIONS OF BIOLOGY. 



I. Growth ; II. Development ; III. Function ; IV. Waste and Repair ; 

 V. Adaptation; VI. Individuality; VII. Genesis; VIII. Heredity; IX. 

 Variation; X. Genesis, Heredity, and Variation; XI. Classification; XIL 

 Distribution. 



Mr. Spencer is equally remarkable for his search after first principles ; 

 for his acute attempts to decompose mental phenomena into their primary 

 elements ; and for his broad generalizations of mental activity, mind in con 

 nection with instinct, and all the analogies presented by life in its universal 

 a spects. Medico- Chirurgical Review. 



