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XXXI. On the beneficial Results of planting Potatoes, which 

 have grown late in the preceding year. By Thomas Andrew 

 Knight, Esq. F. R. S. #c. President. 



Read April 5, 1814. 

 I have described, in the Horticultural Transactions* of the 

 last year, the beneficial result of planting Potatoes, which 

 had grown late, and been imperfectly ripened, in the preced- 

 ing year. My experience was then confined to one variety, 

 and a single season : I have now seen the effects of the same 

 mode of culture on several varieties; and the advantages 

 have been so great, that I am led to address another paper 

 to the Society upon the same subject. The produce of the 

 different varieties has not only been increased, where the 

 soil and manure have been the same, but the variety itself 

 has, in some instances, changed its character, to an extraor- 

 dinary extent. One early variety, which had been several 

 years cultivated for my own table only, on account of its 

 small size, now produces as large Potatoes as I wish to raise 

 for my servants' hall ; and I find the earliness also of the 

 crop, to some extent, dependent upon the state of the varie- 

 ties ; so that the success of the gardener in raising an early 

 crop of Potatoes, of any variety, may be good or bad, ac- 

 cording to the mode of culture, in the preceding year, of 

 the tubers or plants. A variety also, which appears ex- 

 pended and worthless, may be restored, in some cases at 

 least, to its primary vigour and value. I sent to the Hor- 

 ticultural Society, two years ago, two varieties of early 

 * See page 64 of this Volume. 



