[ '31 3 



rncntion the diverfitics in other rcfpefbs: ^ereforc 

 it cannot, I think, be denied that this cxperimcnr 

 affords a clear dcmonllration, that there are pl^n:^ 

 which do not produce others of the fame fort with 

 thcmfelves when reared from feeds, but varieties o 

 the fame clafs of plants, which may be diverfified 

 without end, the nature of which diverfitics cannot 

 be foreknown. 



Allow me, therefore, to add one more to the two 

 clafles of plants that were diftinguifhed in my foiv 

 mer paper; and we (hall now have the following 

 three clafles of plants, viz. 



ift. Invariable, viz. Thofe tnat always produce 

 the fame kind in every refped, with that of the 

 feed fown; fuch as peafe, beans, &:c. 



2d. Permanent. By which I mean thofe planr^ 

 that may be propagated from feeds without change, 

 as long as they are reared at a great di (lance from 

 other varieties of the lame plant, but which will b^: 

 altered if fuffered to grow near others of the fame 

 fort, producing with certainty an intermediate moK- 

 grel kind, participating of the nature of the forts 

 that grew near to each other, and nodiing elfc: 

 viz. Cabbages, turnips, beets, &c. 



K a 3d. Sport hi-^, 



