526 MAN CONTROLS HIS ENVIRONMENT FOR WEALTH 



having been produced in 1929. Barley and rye, grains much like 

 wheat, are produced in smaller quantity. One of the most impor- 

 tant grain crops for the world is rice. The fruit of this grasslike 

 plant, after threshing, screening, and milling, forms the principal 

 food of probably one third of the human race. 



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How can you account for the location of these wheat-producing areas in the United States ? 

 Why is wheat such an important crop in this country ? 



Practical Exercise 4. Obtain from government publications or the World 

 Almanac the following facts: (1) amount invested in manufactures for the 

 current year; (2) amount invested in agriculture for the current year; 

 (3) the size and value of the corn crop ; and (4) the size and value of the 

 wheat crop. 



Practical Exercise 5. What agricultural products are raised in your com- 

 munity? About what proportion of wealth is invested in agriculture as 

 against manufactories? Do they raise any "corn on the hoof" in your 

 community ? 



Practical Exercise 6. List in your table ten important grains used as foods. 

 Give ten different uses of grains. 



Practical Exercise 7. If there is a flour mill in your locality, visit it and 

 report to the class on your trip. 



Garden fruits and vegetables. Vegetables have come to play 

 an important part in the diet of man. People are using more 

 vegetables and less meat, and are more healthful and feel better 

 for it. Market-gardening forms the lucrative business of many 

 thousands of people near our great cities and in many of our south- 

 ern states. Some of the important garden fruits are squash, 

 cucumbers, pumpkins, melons, tomatoes, peppers, strawberries, 



