Works o/ Herbert Spencer published by D. Appleton & Co 

 A NEW SYSTEM OF PHILOSOPHY. 



PRINCIPLES OF BIOLOGY. 



T 1 is work is now in course of publication in quarterly numbers (from 8$ 

 to 100 pages each), by subscription, at $2 per annum. It is to form two vot- 

 antes, of which the first is nearly completed, four numbers having beeii 

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

 ftf 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 hi valuable 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 OP BIOLOGI. 



L Growth; II. Development; III. Function; IV. Waste and Repair, 

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

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

 Distribution. 



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

 for bid acute attempts to decompose mental phenomena into their primary 

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

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

 . Medico- Chirurfficat Rerieio. 



