440 TRANSACTIONS OF ROYAL SCOTTISH ARBORICULTURAL SOCIETY. 



£105. At GO years the remaining 200 trees averaged 22 feet; 

 value at lOd. per foot, £183. Total value of crop, £471. 



Norway Spruce, Abies excelsa. 



This is used in most plantations as a nurse, and prized for game 

 coverts, and on that account, more than for the value of its timber, 

 it is very extensively planted. Here, of course, we only consider 

 it as a timber tree. 



On No. 1 soil, at 30 years, 13G0 trees averaged 4 feet; value at 

 6d. per foot, £136. At 31 years, 680 trees sold for £72. At 

 40 years, 280 trees sold for £49. At 45 years, 400 trees averaged 

 9 feet ; value at 6d. per foot, £90. At 48 years, 200 trees sold 

 for £55. At 60 years, 200 trees averaged 20 feet ; value at Gd. 

 per foot, £100. Total value of crop, £276. 



On No. 2 soil, at 30 years, 1360 trees averaged 41 feet; value 

 at 6d. per foot, £153. At 31 years, 680 trees sold for £74. At 

 40 years, 280 trees sold for £50. At 45, 400 trees averaged 10 

 feet; value at 6d. per foot, £100. At 48 years, 200 trees sold 

 for £58. At GO years, 200 trees averaged 22 feet; value at Gd. 

 per foot, £110. Total value of crop, £292, 



No. 3 soil is not suited for growing spruce to perfection. It 

 grows fairly well up to 36 or 40 years old, after which it begins to 

 fail. At 30 years, 13G0 trees averaged 3 feet; value at Gd. per 

 foot, £102. At 31 years, 680 trees sold for £60. At 40 years, 

 280 trees sold for £46. At 45 years, 400 trees averaged 8 feet ; 

 value at Gd. per foot, £80. At 48 years, 200 trees sold for £50. 

 At 60 years, the remaining 200 trees averaged 12 feet; value at 

 6d. per foot, £60. 2'otal value of crop, £216. 



On No. 4 soil, at 30 years, 1360 trees averaged 4i feet; value 

 at 6d. per foot, £153. At 31 years, 680 trees sold for £75. At 

 40 years, 280 trees sold for £52. At 45 years, 400 trees aver- 

 aged 10 feet; value at 6d. per foot, £100, At 48 years, 200 

 trees sold for £60. At 60 years, 200 trees averaged 20 feet; 

 value at 6d. per foot, £100. Total value of crop, £287. 



The Silver Fir, Picea 2icctinata. 

 This grows slowly in its early stages, but when older it grows 

 rapidly. It is recommended by some for planting on clay soils, 

 but my experience is that after about 40 years' growth the tree dies 

 off on clay. It thrives well, and grows to a large size on sandy 

 soils. 



