EFFECT OF NATURAL SELECTION 97 



Meanwhile we leave it here to develop another and a newer method of 

 improvement, based on a more careful study and a more minute knowledge 

 of the real constitution of living beings. 



Exercise. Give the history of some breed of domestic animal, — cattle, 

 horse, sheep, pig, dog, or chicken. 



References. 1. "Types and Breeds of Farm Animals." Plumb. 



2. '' Dogcraft."' Hachwalt. 



3. " Survival of the Unlike." Bailey. 



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