302 



Trees at CO 

 y^ars of boles 

 from 10 to 50 

 feet. 



Long boles 

 may be more 

 valuable ia 

 some iiis- 

 tancefi. 



F.Irn ahd 

 beech. 



Trees at 60 

 years of boles 

 from 24 to 60 

 hit. 



METHOD OP VALUING GROWIlf 6 TIMBEE. 



Again, let it be supposed, that trees sixty years of age 

 have increased annually, during their growth, fifteen inches 

 in height, and one inch and a half in circurisference, the 

 girt and conteats of their boles, if of the under-mentioned 



lengths, will be as under, viz. 



Contents 

 Ft. in. p. 

 Trees with 20 ft. boles will be 19| in. girt at 10 ft. high, 52 9 9 

 Do. 2.5 do. 18i do. I2i do. 6l o 5 



Do. 30 do. 18 do. 15 do. 67 6 O 



Do. 40 do. l6| do. 20 do. 75 76 



Do. 50 do. 15 do. 05 do, 7s 1 6 



Taking it for granted, that the shorter boles will increase 

 faster in thickness than the longer ones, it is reasonable to 

 expect, that the forty feet bole will contain more timber 

 than the titty feet bole when they are both sixty years old ; 

 and if tbey are both sold at the same rate per foot, the forty 

 feet bole must consequently be more valuable. If, how- 

 ever a higher price can be had for longer boles, this itiaj^ 

 compensate not only for their deficiency in measure at sixty 

 years of age, but also for their standing beyond the period 

 when they cease paying the cotnmon rate of interest for the 

 money they are w»rth, which 1 suppose is frequently the 

 case as to tall elm trees, fit for keel pieces, and perhaps 

 beech for ship planking. It is hence evident, that, where 

 the soil is such as will enable trees to grow to a great height, 

 it will be necessary, before we decide how high to prune 

 them, to consider to what purposes the timber can be most 

 advantageously appropriated. 



Whatever the lengths of the boles of trees increasing da 

 above maybe, their increase is five per cent perannurti, one 

 year after their girt in the middle is 15 inches, but not longer. 



Again, let it be supposed, that trees sixty years of age 

 have increased annually, during their growth, eighteen 

 inches in height, and two inches in circumference, the girt 

 and contents of their boles, if of the undermentioned 

 len^hs, will be as under, viz. 



Trees with 24 ft. boles will be 26 inches girt at 12 ft. high, 

 Do. Mi tlo- 25 do. J 5 do. 



Do. 36 do. 24 do. 18 , do. 



Do. 4ii ilo. 22 do. 24 do. 



Do, du do. 20 iw. 30 d». 



Content s. 

 Ft. in. p. 

 112 S o 

 130 2 6 

 144 

 j6l 4 o 

 166 9 O 



Here 



