[ 46 3 



Article IV. 



On the Curl in Por4roES. 

 [By Benj. Pryce, efq.] 

 Gentlemen, 



AS Potatoes are fo general and valuable an article 

 of food, an enquiry into the caufe of the dif- 

 eafe called the Curl, which fo much impedes their 

 growth, and injures their quality, feems perfectly 

 confonant with the views of the Society. For fe- 

 veral years I have examined a great number of crops, 

 made experiments, and collefted every well-authen- 

 ticated faft in my power; from all which I have been 

 ready to think, with our able Vice-Prefident Mr. 

 BiLLiNGSLEY, (and many other attentive obfervers) 

 that the fubjeft fecmed to be " involved in impene- 

 " trable myftery." Like him, I have found that po- 

 tatoes of the fame fort, kept in the fame manner, 

 planted at the fame time, in the fame foil, and in 

 every refpeft alike circumftanced, have produced part 

 of the crop curled, and part not curled; — and like 

 him I have found two (hoots from the fame fet, of 

 which the one was curled, and the other healthy.* 



After much diligent obfervation and enquiry, I 

 had reafon to believe that the diforder did not arife 



* See Mr. Billingsley's Obfervations on the Curl, vol. vi. of the 

 Society's Papers, p. 344, 



from 



