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another climate. Those holding large farms are able 

 to change from one part of it to another, and this 

 usually provides variation in soil, which is beneficial, 

 but in course of time a change to a seed grown under 

 more widely differing circumstances becomes desirable. 

 Farmers living at a distance from each other may 

 interchange seed, when the only extra expense in- 

 curred is that for carriage. 



It is highly important that seed potatoes are not 

 placed in bags which have contained substances in- 

 jurious to the buds. Nothing is more injurious than 

 sugar. A few years ago a large London dealer 

 claimed a heavy sum, and obtained it after a full trial, 

 against a foreign importer, who shipped a large order 

 of seed potatoes in bags which had previously con- 

 tained sugar, as they were useless for seed purposes. 

 He was able to produce ample evidence that sugar 

 bags, when unwashed, would have this effect. Bags 

 which have contained nitrate of soda, if unwashed, 

 are very destructive to the buds. Those which have 

 contained oil cake, or superphosphate of lime, may 

 be used. These points must be borne in mind not 

 only when the potatoes are sent long distances, but 

 also when moving them from one part of the farm 

 to another. 



Effects of Flooding. 



The buds are susceptible to injury from other causes. 

 Immersion in water not only destroys the buds, but in 

 a short time causes destruction of the whole tuber. 

 The tuber is worthless if under water more than a 



