( 35 ) 



cording to the goodnefs of the foil which 

 produces them, we cannot fix the quantity 

 by the number of roots, nor can we afcertain 

 the quantity to be given to every bead by 

 weighing the roots j many perfons would 

 neither have time nor conveniences for 

 weighing them - } and T in all content myfelf 

 with relating the following facts, which will 

 throw upon this fubject ail the light of which 

 it is fufceptible. 



In the month of May, 1785, I planted fix- 

 > teen thoufand and fome hundreds of thefe 

 (roots, in a field containing two acres and 

 Ian eighth, Heidelburgh meafure : this mea- 

 sure is the fame, as I am allured, as that of 

 terrain ; the acre containing 250 roods, 

 the rood ten feet, and the foot ten royal 

 aiches. From the beginning of July, till 

 the 15 th of November, feven cows and three 

 calves were ccnftantly fed from the produce 

 of the leaves, mixed with a third or fourth 

 of other herbage, as I have before mentioned; 

 and from the 20th of November they eat the 

 roots cut fmall, in the manner that I have 

 already pointed out. The cows had two 

 D 2 meals 



