Sept. 1. 1920 Line-Selection Work with Potatoes 573 



from this part of the field seed for the entire acreage the following 

 season. But if one is not absolutely sure he can pick out the interme- 

 diate types in roguing, this practice may prove disappointing. Once 

 the special seed plot is established, it may well be continued from year 

 to year, the seed for the special seed plot of each year being selected 

 from the seed plot of the year before. It is even advisable to go into 

 the special seed plot and mark especially promising groups of hills to 

 be dug to furnish seed for the seed plot of the following year. 



