REFERENCES 207 



bag on the ear again for a few days longer. Describe the corn when 

 mature, and plant the grain the next year to find out the result of 

 the cross. 



5. Try to cross-pollinate an apple on a peach, pear, quince, or 

 cherry. It is possible for a failure to be as instructive as a success. 



6. Label a few clusters of apple blossoms. Count the blossoms. 

 Later, count the blossoms that produce fruit, and determine the per 

 cent. 



7. Remove all the blossoms of an apple cluster except one. Note 

 whether the fruit is better than those borne by the other clusters. 



REFERENCES 



New Creations in Plant Life. Harwood. 

 Plant Breeding. Bailey. 

 Principles of Breeding. Davenport. 

 Plant Breeding. De Vries. 

 Cereals in America. T. F. Hunt. 

 Farmers' Bulletins. Washington, D. C. 



317. Increasing the Production of Corn. 



334. Plant Breeding on the Farm. 



342. Potato Breeding. 



The Art of Seed Selection and Breeding. Year Book 1906. 



Sugar-beet Seed Breeding. Year Book 1904. 



