t H7 ] 



When you have holed your potatoes, take them 

 out before they are fprit, and lay them dry until 

 you have fee or fown them, and you will have no 

 curled potatoes. 



LETTER XI. 



THIS writer was at the expence of procuring 

 fets at fifty miles diflance, and where this difeafe 

 was not known; the firft year's trial was fuccefsfuli 

 the year following he procured fets from the fame 

 place; but one-fifth of his crop was infedled. By 

 way of experiment, he planted fets from roots which 

 had been infeded the year before, and fome of thefe 

 produced healthy plants, free from all infedion. 



As every effedl muft have a caufe, he fuppofed 

 It might be fome infedV, which, living on the 

 leaves, gave them that curled and fickly appear-* 

 ance, as is the cafe in the leaves of many fhrubs 

 and trees. But whether the infed: be lodged in the 

 old Jets y and to be dcftroyed at the time of plant- 

 ing, or, proceeding from fome external caufe, 

 can only be deftroyed afterwards, he is not yec 

 certain, although he has made the following ex- 

 periments ; ■■■■ 



On a piece of ground that had not been dug for 



twenty years, he planted four rows of fets, which 



R2 he 



