GROWING GOLD. 137 



Expenses of planting an acre. 

 Trenching 160 rods, at 8d. per rod, 5 6 8 



1 



8 15 0 



Seven thousand oak plants, at 

 25s. per 1000, 



Planting same with great care,"^ 

 and looking over the plants the first V 0 18 

 two years, filling up vacancies, &c.3 



£.15 0 0 



All vegetable productions have their ap- 

 pointed time of maturity, but from the dis- 

 parity of the circumference of oak trees of 

 the same age, size cannot be taken as a guide 

 to determine when they cease to increase in 

 value ; this depends on so many circum- 

 stances, that the appearance of the trees can 

 alone be depended upon. The practice of 

 thinning large trees being destructive to those 

 which are allowed to remain, and as planting 

 young trees amongst old ones cannot be the 

 most economic method of growing timber, al- 

 though it is practised * by the officers of the 



* Between Windsor Park gate and Ascot race course. 



