8o Science of Plant Life 



in this particular field than have all other countries com- 

 bined. Examples of plants that have been successfully in- 

 troduced into this country through the efforts of government 

 experts are the drought-resistant wheat, dasheens, figs, dates, 

 guavas, kafir corn, milo, and new varieties of oranges. 



PROBLEMS 



1. In the recent Yearbooks of the Department of Agriculture, look up the 

 accounts of new plant introductions. 



2. Why is it important that the United States should grow within its own 

 boundaries as great a variety as possible of cereals, fruits, and other food- 

 producing plants? 



