LIST OF PLATES 



PLATE PACING 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 

 xi 



