52 POTATOES. 8. 



arifen from too long a continuance of declining 

 varieties. Be this as it may, it appears to be 

 an opinion eftabliftied here, by fome years 

 experience, that frejh varieties, raifed from 

 ' feed, are not liable to that difeafe *. 



T-t, 



The 



* This matter, however, may not yet be fuffieiently 

 nfcertained, to be regiftered here as a fa6h This dif- 

 eafe made its appearance fome years ago, with more or 

 lefs eiTc6t, in, I believe, every part of the kingdom. 

 In fome parts of it, its continuance was fhort ; its effects 

 have ceafed; and are now almoft forgotten. In one 

 hi fiance, (which I may hare occafion to mention here- 

 after) its removal was, in all probability, owing to 

 the introduction of new varieties. 



The Diftrict under furvey furnifties a remarkable 

 inftance vefpecling this difeafe. The Moi elands are at 

 prefent in a manner free from it, while the Vale is Hill 

 in fome degree infected with it. Plants procured from 

 the Morelands remain free from it in the Vale, the firfi 

 year; but, being continued, become liable to the dif 

 cafe. 



The difeafe of curled tops is feldum obvious at the 

 firft coming up of the plants ; but attacks them as they 

 ?ncreafe in fr/e ; the entire top becoming dwarfilh and 

 ihrivelled, as if affecled by drought, or loaded with in- 

 fe<5ts : ' tliey neverthelefs live, and increafe, though' 

 flowly, in nzc ; but cLe roots art unpi\-dutive. Some 

 cr-'ps have beer, almoft \vholiy Jcitroycd by this dif= 

 eafe. 



Where the attack has been partial, weeding &xt tbe 

 difcafcd plants, as they failed, is faid to have had a good 

 effect. _ And, /'/ is faid, the Morelaaders i;ot rid cf the 

 difeafe through this means. 



