EXPERIMENTS IN POTATO CULTURE. 117 



small whole ones. 3d, The seed end of a potato is better to 

 plant than the stem end, because the plants start with more 

 vigor, and produce larger and more potatoes. 4th, A large 

 piece of a potato is better to plant in ordinary soil, and will 

 produce a much better crop, than very small pieces or single 

 eyes. 5th, Potatoes with sprouts long enough to break off 

 in planting are not as good as potatoes with the eyes started 

 just enough to show their good condition. 6th, The form 

 of a potato cannot, as a rule, be changed by the selection 

 for planting any particular form. 7th, Two distinct varie- 

 ties will not mix by planting in the same hill. 8th, The 

 potato scab is a blemish that the more we investigate the 

 less we appear to know about it. 



First Experiment. 



No. 1, small i^otatoes ; No. 2, lai-ge cut. 



Total. Acre, 



lbs. oz. bush. 



7 14 525 



8 2 COM 



267J 

 264g 



26« 



The small seed producing 13 jiounds more of large potatoes, and 9? 

 less of small. 



Second Experiment. 



No. 3, seed end ; No. 4, stem end. 



The seed end for six years produced, ■ 



60 



25i 



