90 



felling rotation. There is, however, this difference that these 

 areas are often — for instance in a mixed crop for which one 

 species out of many is exploited— exceedingly large ; so that 

 instead of each block containing a number of coupes, each 

 coupe may, in some cases, include a number of blocks or 

 compartments. 



5. Order to be followed in the fellings — The order of the 

 fellings is of less importance in the selection method of 

 treatment than in any other. It will, however, generally be 

 convenient — and there will rarely be reasons for adopting 

 another course — that the fellings should follow one another 

 in regular order on the ground. 



6. The Possibility : Liiuitatioa of the fellings.— The limitation 

 of the material to be removed may be effected in several ways, 



vis. :— 



(a) by cultural rules : the principal fellings being in 

 addition limited to over-mature trees or tO' 

 trees above a given exploitable girth ; 



(i) by prescribing, in addition to cultural rules, the 

 quantity of material, to be felled, either by 

 number of trees or by volume. 



(a) Fellings limited hy cultural rules. — The cultural 

 rules prescribing the'^ method of making the fellings should 

 be easy to understand and of general application ; and they 

 should also ensure that, as far as possible, more material 

 than the forest produces will not be removed. Where the 

 demand and consequently the fellings are very light nothing 

 more is required than to fix the diameter below which trees 

 must not be felled, or to limit the fellings to the removal, 

 here and there,, according to the principles of the selection 

 method, of such trees as are over-mature or are above a 

 certain girth. 



Such general rules sufficiently limit the fellings where 

 the crop is already constituted according to the selection 

 type or where there is a good executive staff. But where, 

 as often happens, this is not the case, there is danger of such 

 simple rules being unintelligently or unscrupulously applied. 



To meet the difficnlty it is well, when dealing ■with large irregular forest masse?, 

 to Bupplemfnt, as in the following example, the general rules hy hints or directions, 

 conveyed in the " Remarks " column of the description of each block, regarding the 

 nature of the fellings to be made : — 



