442 TIJANSACTIONS OF ROYAL SCOTTISH AUBORICULTURAL SOCIKTY. 



The following Table shows the comparative growth and value of 

 the different timber trees treated of in this essay, at the ages of 

 30, 45, and 60 years, with the total value of the crop grown on an 

 acre during the period of GO years : — 



TABLE, showing Comparative Growth in cubic feet and value in 

 money, of an acre of various Timber Trees, at the ages of 30, 

 45, and 60 years, on soils described in Essay as Iso. 1, No. 2, 

 No. 3, and No. 4. Fractions of a pound sterling are omitted 

 in the values. By David Tait, Overseer, Owston Park, 

 Yorkshire. 



