Jan.'} PLANTING,; l6l 



four oaks are planted, fuppofing them at right 

 angles, and at nine feet apart, the interfaces will 

 fall to be filled up with five nurfes, the whole 

 (landing at four and a half feet afunder. When 

 fixteen oaks are planted, there will neceflarily be 

 thirty-three nurfes planted ; and when thirty-fix 

 oaks are planted, eighty-five nurfes ; but when an 

 hundred principal trees are planted in this man- 

 ner, in a fquare of ten on the fide, there will be 

 two hundred and fixty-one nurfe plants required. 

 A Scots flatute acre would require, if planted at 

 the above-mentioned diftances, fix hundred and 

 feventy-fix oaks, and two thoufand and twenty 

 larches, or very nearly fo. The Englifh acre 

 would require five hundred and thirty-fix oaks, 

 and one thoufand fix hundred and ten larches, or 

 thereabouts. 



By this calculation, we find, that if the planta- 

 tion or mafs be extended to an acre, the propor- 

 tion of nurfes to the principals will be as three 

 to one, or very nearly fo ; and this proportion of 

 nurfes to the principals, will hold when the latter 

 are placed at fix or twelve feet apart, as well as at 

 nine. 



It is abundantly evident, that, if timber trees be 

 planted at fix, feven, eight, or nine feet apart, ac- 

 cording to the quality of the foil, they are planted 

 clofe enough to become ufeful, provided they be 

 nurfed up by others for a time. Hard-timber 



L trees 



