CHAPTER V 



SELECTION 



Huxley on "The Quintessence of Darwinism" Analytic 

 Abstract of "The Origin of Species" (Variation under 

 Domestication Artificial Selection Variation under 

 Natural Conditions Struggle for Existence Natural 

 Selection) 



The Case for Natural Selection Direct Evidence of Natural 

 Selection Implications of the Concept of Natural Selec- 

 tion Different Kinds of Selection (Sexual Selection 

 Germinal Selection) Family and Group Selection Auxil- 

 iary Hypothesis of Isolation Eugenics as a Renewal of 

 Evolution. 



D \ re TYTTi.jS -achievement in "The Origin of 

 Species" was twofold. In the first p'ace, 

 he prf* r <ffif)f.ecl tJift^yi(^ences__Qf the fact of 



go for^iKly on^ so ffljjly t.bfl.t. h(* 



made evolutionists ^oLihe ffvfrat majnrit^of 

 hin rradm Indeed, he made the world 

 "think in terms of evolution." In the second 

 place, in ^ 1>g th^VY ^ "^tnrf*- ! fiffi 1 *"" ^ 

 ^ ygriation^ hr #mrn n pfliisaj inter- 

 t} lf f 1 gH on g pm^ss nf T^emmin^. 

 He made the evolution idea current intellec- 

 tual coin; but his success fti making the fact 

 clear and credible was in part due to his 

 discovery of one of the chief factors. 



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