LIST OF PLATES 



PLATE FACING PAGE 



I. The potato as first grown in Europe ... 19 



II. Types of potato tubers, as illustrated by the Wis- 

 consin Experiment Station .... 32 



III. A plate of smooth potatoes with few and shallow 



eyes — the breeder's ideal .... 48 

 (Photo by Farm Crops Dept., Cornell University) 



IV. Illustration of good shaped potato for table use. 



Variety, Green Mountain . . . .51 



(Photo by Farm Crops Dept., Cornell University) 



V. Typical early and late potatoes. Top, Irish Cob- 

 bler (early). Bottom, Rural New Yorker 



(late) 53 



(Photo by Farm Crops Dept., Cornell University) 



VI. Breeding. Each group of four plates represents the 

 progeny of a tuber, and each plate is the prod- 

 uct of a single hill ...... 56 



VII. Tubers with histories. Upper, influence of growing 

 season, showing the second-growth tubers on 

 the right compared with the normal uniform 

 tubers on the left. Lower, breeding. — The 

 immunity and susceptibility of two tuber 

 progenies ....... 61 



VIII. Seed potatoes. Top, different ways of cutting. 



Bottom, good and bad types for seed . . 100 



