Works of Herbert Spencer published by D. AppUton & Co. 

 Tlie Philosophy of Herbert Spencer. 



THE 



PRINCIPLES OF BIOLOGY 



Vol. I. 475 pages. (Now in press.) 



CONTENTS: 



Part I. — The Data op Biology. 



L Organic Matter. — n. The actions of Forces on Organic Matter. — HI. Th« 

 re-actions of Organic Matter on Forces. — IV. Proximate Definition of 

 Life. — V. The Correspondence between Life and its Circumstances. — 



VI. The Degree of Life varies as the Degree of Correspondence.— 



VII. The Scope of Biology. 



Part EL — The Inductions of Biology. 



L 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. Classifica- 

 tion. — Xn. Distribution. 



Part III. — The Evolution op Lira. 



I. Preliminary. — H. General Aspects of the Special-creation-hypothesis. — 

 in. General Aspects of the Evolution-hypothesis. — IV. The Arguments 

 from Classification. — V. The Arguments from Embryology. — VI. The 

 Arguments from Morphology. — VII. The Arguments from Distribution. 

 — VHI. How is Organic Evolution caused ? — IX. External Factors. — 

 X Internal Factors. — XI. Direct Equilibration. — XII. Indirect Equtti 

 bration. — XHI. The Cooperation of the Factors. — XrV. The Converg 

 ence of the Evidences. 



All those works are rich In materials for forming intelligent opinions, even where 

 we are unable to agree with those put forth by the author. Much may be learned from 

 Jncm in departments in which our common Educational system is very deficient The 

 active citizen may derive from them accurate systematized information concerning his 

 highest duties to society, and the principles on which they are baeed. He may gain 

 clearer notions of the value and bearing of evidence, and be better able to distinguish 

 between facts and inferences. He may find common things suggestive of wiser thought 

 —nay, we will venture to say of truer emotion — than before. By giving ns fuller reall- 

 tations of liberty and justice his writings will tend to increase onr self-reliance in tht 

 treat emergeney of civilization to which wo have been summoned.— Atlantic Montldv 



