Worki o/ Herbert Spencer published by D. AppUUm d: Co 



A NEW SYSTEM OF PHILOSOPHY. 



PKINCIPLES OF BIOLOGY. 



Tbifl work is now in course of publication in quarterly numbcre (from 80 

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

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

 jsued. \Vhile 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. Il 

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

 be formed by glancing over a few of the first chapter headin^rs. 



Part Fikst. — Data of Biology. 



I. Organic Matter; XL 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 Dcgi'ce of Correspondence ; VII Scope of 

 Biology. 



Paut Second. — I.vdcctions of Bior.oai. 



L Growth; IL Development; III. Function; IV. Waste and Repait , 

 V. Adaptation; VL Individuality; VIL Genesis; VIIL Heredity; IX. 

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

 Distribution. 



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

 tat his acute attempts to decompose mental phenomena into their primary 

 oemcnta ; and for his broad generalizations of mental activity, mind in coi> 

 nection with instinct, and all tlie analogies presented by life in its univerM] 

 npf'^ts — Medico- (Jhirttr^jical Hcviev. 



