\6 Vegetable Staticks. 



abo^e ten times the velocity through the 

 furface of the roots, that it does thro' the 

 furface of the leaves. 



And fetting the roots, at a medium, at 12 

 inches long, they muft occupy a hemifphere 

 of earth two feet diameter, that is, 2.1 cu- 

 bick feet of earth. 



By comparing the furfaces of the roots of 

 plants, with the furface of the fame plant 

 above ground, we fee the neceflity of cut- 

 ting off many branches from a tranfplanted 

 tree: For if 256 fquare inches of root in 

 furface was neceflary to maintain this Cab- 

 bage in a healthy natural itate: fuppofe, upon 

 digging it up, in order to tranfplant, half the 

 roots be cut off, ( which is the cafe of mod: 

 young tranfplanted trees ) then it's plain, that 

 but half the ufual nourishment can be car- 

 ried up through the roots on that account ; 

 and a very much lefs proportion on account 

 of the fmall hemifphere of earth, the new 

 planted fhortened roots occupy ; and on ac- 

 count of the loofe pofition of the new turn- 

 ed earth, which touches the roots at firft 

 but in few points. This (as well as experi- 

 ence ) ftrongly evinces the great neceflity of 

 well watering new plantations. 



Which 



