78 



this object long narrow strips are marked out on the ground 

 and every alternate strip is cleared until the whole area has 

 been traversed, when the alternate strips, omitted at the first 

 passage of the cuttings, are clean felled in their turn. 

 By these means a newly-felled coupe has, as it were, a hedge of 

 seed bearing and sheltering trees on either side of it. Larger 

 areas may obviously be felled without risking failure of 

 reproduction than in the case of the method of adjacent 

 areas, and as in that method reserves may be left if de- 

 sirable. 



The system of clean-fellings (with artificial regeneration) is 

 applied in the same way as the method of clearings, except 

 that, instead of trusting to reproduction from seed falling 

 from the reserved trees or from the adjacent forest, the area 

 felled is planted up or sown each year. The size of the 

 coupes may obviously he as large as can conveniently be 

 re-stocked artificially ; and, unless re-stocking fails, tlie ideal 

 or normal type of forest may be approached very closely 

 under this method. The cost and difficulty of successfully 

 re-stocking large areas are the chief drawbacks to its employ- 

 ment. 



METHOD OF STOREYED FOREST. 



General plan.— In applying this method the number of 

 stems of each age or size-class to be reserved must be decided 

 on. This number is deduced from the area covered by the 

 crown of the average tree of each size-class and from tbe rate 

 of growth. The difference in age between each class is, we 

 may assume, equal to the length of the felling rotation ; and 

 the classes must be formed so that the trees of one class will 

 attain the dimensions of the next higher class during that 

 interval. Or, if preferable, the size-classes may first be 

 decided on, and the length of the felling rotation, based on 

 the rate of growth, may be made to correspond. 



1, 'F'V'^' ^"PP"^® *^** '^^ ^i*'"<'*e'"8 "f the size-classes determined on are : below 

 ^A ■ J } '■ ^' *° ^^'' ■"■'' *° ^'' ^""^ °''^^ 2' ""^^t ! tfaa* <^"es of 2 feet diameter have 

 attained their maximum utiUty ; and that the rate of growth is such that in about 

 dO years the trees of the lowest dimension in one class attain the minimum size for 

 the next higher class. This period of 30 years would, therefore, be taken as the 



