Wool has become a very valuable product, and the sheep grown in this region number about one-half the total in the United States. The growing of macaroni-wheat is extending to lands that fail to produce crops of ordinary wheat.
QUESTIONS FOR DISCUSSION
In what ways does the basin of the Great Lakes facilitate the commerce of the United States?
How has the topography of the Mississippi Valley affected the evolution of farming-machinery?
Why are shippers willing in many cases to pay an all-rail rate on wheat sent to the Atlantic seaboard, nearly three times as great as the lake and canal rates?
The acre-product of wheat in the United States is about twelve bushels; in western Europe it varies from twenty-five to more than forty bushels; to what is the difference due?
What is meant by sea-island cotton?—for what reasons is cotton imported from Egypt and Peru into the United States?
In what manner is cotton used in the manufacture of pneumatic tires, and why is it thus used?
What are refrigerator-cars?—refrigerator-steamships? Name some of the regulations required in shipping cattle.