CHAPTER X. 

 THE FOEMULA OF EVOLUTION. 



41 "PHILOSOPHY," says Mr. Spencer, "has to formu- 

 J- late the passage from the imperceptible into 

 the perceptible and from the perceptible into the im- 

 perceptible." * " The change from a diffused imper- 

 ceptible state to a concentrated, perceptible state, is 

 an integration of matter and concomitant dissipation 

 of motion, and the change from a concentrated, per- 

 ceptible state to a diffused impreceptible state is an 

 absorption of motion and concomitant disintegration 

 of matter. . . . Loss of motion and consequent inte- 

 gration, eventually followed by gain of motion and 

 consequent disintegration see here a statement com- 

 prehensive of the entire series of changes passed 

 through." -f- 



By a succession of tentative applications of the law 

 gradually filling up the outline, Mr. Spencer moulds 

 it into its final perfected form, which stands thus : 



" Evolution is an integration of matter and con- 

 comitant dissipation of motion; during which the 

 matter passes from an indefinite, incoherent homo- 

 geneity to a definite, coherent heterogeneity, and 



* First Principle** 93. t Ibid, 94. 



