DETERMINATION OF THE YIELD. 



the cuttings should proceed, and the grouping together of 

 compartments into suitable cutting series. The latter may be 

 a definite arrangement, but in many cases temporary cutting 

 series must be designed, which will, at the time of sub- 

 sequent revisions, be gradually led over into more permanent 

 groupings. 



b. Determination of the Final Yield. 



The first step is to determine the rotation in accordance 

 with the objects to be aimed at, as laid down by the owner of 

 the forest. How this is done has already been explained. 



The financial rotation is ascertained by calculating the soil 

 rental, and the forest per cent, for a number of characteristic 

 woods; in this way it is possible to determine the financial 

 rotation within 10 or 20 years. The rotation actually decided 

 on, as determined by the objects of management, may then be 

 compared with the financial rotation, with a view of bringing 

 out the financial sacrifice involved in a departure from the 

 latter. 



The next step is to select, with due consideration of the 

 desired cutting direction and the establishment of suitable 

 cutting series, the woods where final cuttings are called for 

 during the period, for which the working plan is to be pre- 

 pared, say, for the next 10 years. Special care is taken not 

 to put down for cutting any wood, the removal of which would 

 expose the adjoining woods to windfall ; or where difficulties 

 of transport would be encountered. Subject to the modifications 

 caused by these considerations, the following areas would be 

 selected : 



(1) All areas which must be cut to meet sylvicultural or 



protective necessities, such as the establishment of 

 severance cuttings, woods which must be sacrificed in 

 order to work up to a proper grouping of age classes 

 and arrangement of cutting series. 



(2) All decidedly ripe or over-ripe woods ; the ripeness to 



be determined by the objects of management. In the 



