t 6 S ] 



office they bear to the animal organ fo called ; and 

 becaufe they never yet have obtained an appro* 

 priated name. 



Different kinds of potatoes do not differ from 

 one another more in any one refpett than they do 

 in the form, colour, habitude, time of fpringing 

 forth, &c. &c. of this apparatus of fibres; fo that 

 this ought not only to be attended to as one mark 

 of diftinction between different kinds, but alfo as 

 a particular that may on fome occafions influence 

 the mode of culture that would be proper for par- 

 ticular kinds. I (hall give one example. 



It is found by experience, that fome kinds of 

 potatoes may be profitably cultivated by means of 

 the horfehoing hufbandry; (pofiibly under due re- 

 gulations this might be always of ufe) but in fome 

 cafes that mode of culture is attended with danger ; 

 for, mould the kind of potatoe that is thus culti- 

 vated have a tendency to fend out thefe umbilical 

 fibres early and to a great diftance, if the plough 

 fhould be employed after thefe were fhot forth, it 

 might cut them off, which would have a very dif- 

 ferent effect from cutting the roots that abibrb food 

 for the plant. The flems might thus indeed be 

 increafed, but die produce in fruit much dimi- 

 nilhed. I have feen a field of horfehoed potatoes, 



which, 



