OATS AND OTHER CEREAL CROPS 



91 



of gauze. By rapid rotation of the containing vessel, the sirup is 

 thrown through the gauze into an outer vessel, while the sugar 

 remains in the inner containing vessel. 



Yields. In the United States cane usually produces from fif- 

 teen to forty tons, in Java forty tons, and Hawaii sixty to one hun- 

 dred and twenty tons to the acre. A ton of Louisiana cane in the 



Cutting sugar cane, Porto Rico. 



refinery will make about one hundred and fifty to two hundred 

 pounds of sugar, and about three gallons of low-grade molasses. 

 Many planters devote all their energies to manufacturing sirup and 

 realize from three hundred to six hundred gallons of sirup to the 

 acre. 



QUESTIONS 



1. Give a brief history of oats. 



2. What is the average yield of this crop? 



3. Name the leading varieties of oats. 



4. What kind of soil is best suited to this crop ? 



5. Discuss the cultivation of oats. 



6. Describe the system of grading of this grain. 



7. Discuss the value of barley and rye. 



8. Give a brief history of rice. 



