INTRODUCTION 7 



will be even more interesting than to-day. You have an 

 opportunity that no one has had before. You should have 

 a great deal of confidence in the future, and be determined 

 to make the very most of this one life that you have to 

 live. Nature is sure to reward you very richly if you will 

 obey her laws, and her first law is the law of work. 



QUESTIONS 



1. What is "nature"? 



2. What is "natural science"? 



3. Is nature an enemy or a friend to man? 



4. What has nature to do with inventions? 



5. What are the three great regions of the earth? 



6. How is soil formed ? 



7. How was the first soil formed on the earth? 

 3. Which lived first, plants or animals ? 



