154 PRODUCTIVE FARMING 



cotton in shallow pasteboard boxes with glass over them, 

 secured by binding strips (Fig. 83). A method of preparing 

 samples for school fairs is shown in Fig. 85. 



REVIEW. 



1. Tell what you can of the different tj^Des of wheat. 

 ' 2. Tell of the preparation of the soil and times for drilling in wheat. 



3. What is the legal weight of wheat ? Why should seed wheat be 

 heavier, if possible ? 



4. Describe the appearance of good seed wheat. 



5. What is a self-binder ? What is a header ? What is a thresher ? 



6. What are the chief uses for oats ? 



7. Give directions for the seeding of oats. 



8. Name three types of barley. Which is most grown in America ? 



9. Where may rye be grown ? 



10. How does rye flour differ from wheat jflour ? 



11. What soils are suited to the growing of rye ? 

 ' 12. Describe the use of rye as a green manure. 



References. — U. S. Farmers' Bulletins: 395, Sixty Day and Kherson 

 Oats; 399, Irrigation of Grain; 420, Oats: Distribution and Uses; 424, 

 Oats: Growing the Crop; 427 and 443, Barley. 



CHAPTER XV. 

 POTATOES. 



Irish Potatoes. — This is a very common crop on the farms 

 throughout the United States and Canada. Many millions of 

 bushels are produced and used chiefly as human food. 



Origin and Type. — The potato is a native of America. 

 The first colonists found the Indians growing it. In many 

 places it is called the white potato to distinguish it from the 

 yellow sweet potato. It is widely known as the Irish potato 

 because of its general use in Ireland. There are now a great 

 many varieties, and new names are annually appearing in 

 the seed catalogues. These are chiefly of two types, viz., 

 early potatoes and late potatoes. These differ only in the 

 time required to mature the crop from the time of planting. 

 Early varieties are planted as soon as the ground can be 



