CONTENTS XI 



PAGE 



modes of observation needful. Organic apparatus thrown into 

 a secondary place. Thought taking precedence in the regula 

 tion of life. Organism and Intellect co-operate. Consequent 

 complexity of human functions. Physique has not its equiva 

 lent in mind ; nor has mind its equivalent in physique. 

 Self-directed activity under guidance of intelligence. Animal 

 passion placed under rational law. Human organism subject 

 not only to physical law, but also to moral law. Rational life 

 unexplained by science. Man s place in Nature is determined 

 by his rational life, 38-69 



CHAPTER IV 

 THE RELATIONS OF ENVIRONMENT TO LIFE 



THE difference appearing in life s relation to environment, con 

 sequent on possession of rational power. Inductions based on 

 food-supply do not hold in this case, as they do in the case of 

 animals. Interaction of organism and environment, though 

 not broken, is modified. Human life maintains its position all 

 over the world. How man modifies environment. All rational 

 life is greater than its surroundings. Nevertheless, Nature 

 makes large demands on human effort. As the secrets of 

 Nature are discovered, human dominion is being extended. 

 In animal life, adaptation is by change of structure ; in human 

 life, by fresh inductions, and harmonious regulation of conduct. 

 Nature itself has become a larger thing by the appearance 

 of rational life, 70-83 



CHAPTER V 

 HEREDITY AND EVOLUTION 



PERSISTENCE of species. Variation, consequent on adaptation. 

 Laws of inheritance provide for persistence of species, along 

 with transmission of variation. Heredity secures preservation 

 of structural gain. Its basis is the physiological unit, or the 



