134 CORSICA 



"The volume of trees 0.35 metre (14 inches) and over in 

 .liunu'ter, however realized, shall be counted against the yield. 

 The forest agents shall be free to use whatever method seems 

 satisfactory in estimating the fellings. If it consists, however, 

 of the chief or accidental yield, they will have to use the 

 volume tables which were used in estimating the growing stock. 



' The fellings will remove: 



"(i) All the trees that are dead, defective, overmature, or 

 completely decayed. 



j) Trees measuring less than 0.35 metre (14 inches) in 

 diameter which are not required. 



"(3) Small trees without any future. 



" The agents should not lose sight of the fact that the selec- 

 tion method should not be considered as an empirical process 

 in which one is limited to recruit the yield from dead trees, 

 those overmature or of large size. ... It includes the same 

 operations as the method of regular high forest (seed fellings, 

 secondary, final, cleanings, thinnings). 



" That which differentiates the two methods is that with the 

 shelterwood system the same kind of operations follow con- 

 secutively and are consequently massed in a district . . . 

 while that in the selection system these operations are scat- 

 tered over the whole area of the forest in little spots. It 

 therefore follows that the fellings protect one another, so to 

 speak. Do not imagine therefore that the selection system 

 confines itself to realizing the large timber alone. It is neces- 

 sary, within the perimeter of each felling area, to practice 

 all the essential cultural operations; to free the young growth, 

 to thin the stands that are too thick, to cut out the trees 

 with no future and never to lose sight of the fact that the 

 really profitable growth is that which takes place in the trees 

 destined to remain until the end of the rotation. At the 

 same tune one must avoid the tendency to regularize the 

 stands by allowing any particular age class to dominate a 

 large area just as one must avoid breaking the cover syste- 

 matically to give it the aspect of a selection forest when 

 managing a regular high forest of good growth." 



Only one official reference to the size of the openings to be 

 made has been found: 



". . . in the stands of Corsican pine it will be best, 

 whenever the density of the stand will permit it, to proceed 



87 Marmano working plan, Dec. 5, 1907, p. 14. 



