80 PLANTING. 



(ort or Oircumforrn Girt or Circumference at 



.u tin- Uwt. Seven l-'cet from the Koot. 



Birch . 25 . . 20 



more . 24 . .20 



i . . 23 . .21 



Oak . . 23 . .13 



. 20 . .17 



heights of tlie trees were in full proportion to the girth, and the 

 measurements are an average of the dimensions of six trees of each of the 

 .tiveh; there were numerous instances of individual trees 

 ing any of the above in girth and length *. 



10 above with the former order of the rate of annual 

 the silver fir is found to be much lower in the rate of early 

 in the first instance, but the genial climate in which the trees 

 d in the latter statement were cultivated will readily account 

 for the di>cr-paney. In the higher grounds of Blair Adam before referred 

 ;he silver fir is of slower growth than any of the trees mentioned in its 

 . but after that overtops them to a considerable height. 

 s \\cct chestnut, in the soil and local climate which thus rear the 

 .silver fir ultimately to such a high superiority, stands at the lowest 

 point on the scale, while, in the more southern latitude and lower 

 , the chestnut takes precedence of the birch, sycamore, beech, oak, 

 and a-h. Local circumstances connected with soil, climate, and culture 

 interfere with the idea of drawing general conclusions from these facts to 

 lered as data to guide the practical planter in every case ; but to 

 raluer of plantations, which have only reached to their first stages of 

 facts are of more extensive application, as showing the im- 

 portance of estimating justly the effects of these agents in the progressive 

 or annual rate of produce of timber in different species of forest trees. 



present value of a plantation is that which the market will afford 

 uce at the time the valuation is made. 



ilue is that to which the trees will attain at a remote 

 period, or that to which they may arrive at full maturity, according to 

 their respective species, and best lit the purposes for which they are most 

 i 



When a plantation is only of a few years growth, the value of the pro- 



licant to be estimated, and the growth of the trees is 



mull-terminate as to render it difficult to calculate the ultimate 



.ml when property is to be transferred, the cost of 



ing and the rent of the land occupied, with the sum of compound 



interest on the amount of these, must be taken as a just valuation. 



reached to eight years of growth, their value is so 



mall as to be below estimating ; they will, however, by this time allbrd 



n which to found calculations of their ultimate produce 



and \aluc. I'ntil trees ha\e attained to a full timber sixe, the valuation of 



in oiifjht to proceed on the principle of prospective value. This 



the number of years the trees will require to arrive at full 



., the marketable value of the trees when at that perfec- 



, ; thirdly, the value of the periodical thinnings and of under- 



\. ,,.!. lYom the total amount of these sums must be deducted compound 



irqnirt- to attain maturity ; the remainder 

 ;,i transferable \alue ot the plantation, 

 and a qu f a sandy soil, worth from five 



to twelve shilling per annum when under pasturage, larch had 



Conmrankaied by Mr, Jyhu 1'orcstcr. at Emlilcigh, Duyouskiic. from thy Duke of 

 Bedford 1 * 



