188" OUGAMSATION of SELECTIoN-WOEKfiD FoRirsT'g: 



The yield for the whole forest teiug fixed', as al'so the number' 

 of trees to be extracted each year, the Executive Officer must mark 

 for the axe all trees that are dead, dying or unsound, as well as- 

 some others that are still growing and in a healthy condition, the 

 latter naturally being the largest of all the trees in the coupe and 

 limited to such as are absolutely required to make up the full 

 number of trees fixed for the annual yields Dead and decaying 

 trees under 12 inches in diameter must also be felTed, but oughi 

 not to be included in the yield, since they are no better than mere 

 poles. But formed trees of that girth and upwards, which- are felled 

 because unhealthy or unsound, can on no account be omitted from 

 the yield of the year. The unavoidable premature exploitation of 

 formed trees under the fixed exploitable girth is compensated for 

 by the healthy growth of the larger trees that are preserved, an in- 

 dispensable set off in cases of this kind. 



Besides this, it is certain that in actual practice the determina- 

 tion of the number of trees to fell per acre is not difficult. For it 

 is evident that by cutting on an average two-fifths of a tree per 

 acre per annum in Selection-worked forests managed by the State 

 the owner obtains from them all they can yield that is most in 

 conformity with his wants. The result must be that 70 cubic feet 

 will be extracted where the actual annual increment ia only 70 

 cubic feet per annum, 140 cubic feet where it is 140 cubic feet, 

 and so on. Is not this in truth a desirable state of things to have ? 



In forests worked by Selection it is advisable to establish a- 

 Eeserve Fund based on area, one of one-fourth of the whole area 

 for instance, as in communal copses to be described further on. 



SECTION 3. 



High Forests of Limited Extent. 



In a grove or forest of very limited extent worked by Selection 

 although the conditions of growth may be all that can be desired, 

 yet the interests of the owner (it may be a Commune) may require 

 Annual Exploitations and a Sustained Yield. In that case the quan- 

 tity to cut yearly must be deduced empirically from the average 

 contents of the trees to be felled, due account being taken 

 both of the number of trees that would correspond to the annual 



