Works qf Herbert Spencer published by D. Apphtcn dk Gk 

 The Philosophy of Herbert Spencer, 



THE 



PKLtTOIPLES OF BIOLOGY 



VoL I. 475 pagres. (Now in press.) 



CONTENTS: 



Part L — The Data of Biology. 



I Organic Matter. — 11. The actions of Forces on Organic Matter. — IIT. The 

 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.— 

 VIL The Scope of Biology. 



Part II. — The Inductions of Biology. 



L Growth. — n. Development. — III. Function. — IV. Waste and Repair.— 

 V. Adaptation. — VI. Individuality. — Vll. Genesis. — VIII. Heredity. — 



IX. Variation. — X. Genesis, Heredity, and Variation — XI. Classifica- 

 tion. — Xn. Distribution. 



Part HI. — The Evolution of Lira. 



L Preliminary. — ^H. General Aspects of the Special-creatiou-hypothesis.^ 

 ni. General Aspects of the Evolution-hypothesis. — IV. The Argumenta 

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

 Arguments from Morphology. — VII. The Arguments f.'om Distribution. 

 — Vip. How is Organic Evolution caused ? — IX. External Factors.- 



X. Internal Factors. — XL Direct Equilibration. — Xll Indirect Equlli 

 bration. — XIU. The Cooperation of the Factors. — ^XIV. The Converg 

 ence of the Evidences. 



All these works are rich In materials for forming intelligent opinions, even whero 

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

 Jiem 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 based. He may gain 

 dearer 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 us fuller renll- 

 tatioiu of liberty and justice his vritings will tend to increase our self-reliance in the 

 great emergenej of civilization to which we have been summoned.— Atlantic Monthly 



