43G TRANSACTIONS OF nOYAL SCOTTISH AKBORICULTUEAL SOCIETY. 



value at 9(1. per foot, £103, 2s. Gd. Total vahie of crop, 

 £235, 2s. 6d. 



On No. 3 soil, at 30 years, there were 300 trees averaging 12 

 feet; value, £60. At 32 years, 150 trees sold for £36. At 44 

 years, 50 trees sold for £18. At 45 years, 100 trees averaged 24 

 feet ; value, £60. At 51 years, 40 trees sold for £30 ; and at 60 

 year.s, the remaining 60 trees averaged 40 feet ; value at 7d. per 

 foot, £70. Total valve of crop, £154. 



On No. 4 soil, at 30 years, there were 300 trees averaging 10 

 feet; value, £50. At 32 years, 150 trees sold for £28. At 42 

 yeai's, 60 trees sold for £14. At 45 years, 90 trees averaged 20 

 feet ; value at 5d. per foot, £38. At 52 years, 40 trees sold for 

 £30. At 60 years, the remaining 50 trees averaged 44 feet ; value 

 at 8d. per foot, £73. Total value of a'op, £145. 



The Birch, Betula alba. 



This is a valuable tree for planting in many soils, and in situa- 

 tions where hardly any other tree will grow. It is equally at home 

 on low swampy ground, and high up the mountain side among stones 

 and rocks. It has the advantage of being rabbit proof, which is no 

 mean consideration to the planter. 



At 30 years old, on Xo. 1 soil, there were 680 trees per acre, 

 averaging 4 feet ; value at 6d. per foot, £68. At 40 years, 380 

 trees sold for £66. At 45 years, 300 trees averaged 9 feet ; value 

 at 6d. per foot, £67, 10s. At 50 years, 140 trees sold for £42. 

 At GO years, the remaining 160 trees averaged 16 feet; value at 

 6d. per foot, £64. Total value of crop, £172. 



On No. 2 soil, at 30 years, there were 600 trees averaging 5 feet ; 

 value at 6d. per foot, £75. At 40 years, 300 trees sold for £67. 

 At 45 years, 300 trees averaged 12 feet; value at 6d. per foot, 

 £90. At 50 years, 150 trees sold for £56. At 60 years, the 

 remaining 150 trees averaged 20 feet ; value at 6d. per foot, £75. 

 T'otal value of crop, £198. 



On No. 3 soil, at 30 years, there were 680 trees averaging 3 

 feet; value at 6d. per foot, £51. At 40 years, 380 trees sold for 

 £47. At 45 years, 300 trees averaged 7 feet; value at 6d. per 

 foot, £rrl, lOs. At 50 years, 140 trees sold for £33. At GO 

 years, the remaining 160 trees averaged 14 feet; value at 6d. per 

 foot, £56. Total value of crop, £136. 



On No. 4 soil, the growth and value of birch is much the same 

 as on No. 3. 



