TEEMS IN FORESTEY. 9 



Cull, V. To take out of a forest by selection a portion of the trees. 



Culled forest. Forest from which cuttings by selection have removed a portion of 

 the trees. 



Current annual increment. The volume of wood produced in a given year by the 

 growth of a tree or stand. 



Cut over, to. To cut most or all of the merchantable timber in a forest. 



Cut-over forest. Forest in which most or all of the merchantable timber has been 

 cut. 



Cuttinjr area. The area over which cuttings are to be or have been made. 

 G., Schlag. F., coupe. 



Cutting heig-ht. The height above the ground at which a tree is to be cut. See 

 Stump height. 



Cutting" limit. See Diameter limit. 



Cutting' series. A block or a part of a block containing even-aged stands whose 

 ages differ uniformly within given limits and which are to be cut in turn, the cut- 

 tings usually following a given direction. A perfect cutting series seldom exists, 

 except under the clean-cutting method followed by artificial reproduction, or 

 under the sprout method. 

 G., Hiebszug. F., suite des coupes. 



Deaden, V. To kill a standing tree by girdling it. 

 G., ringeln. F., ceinturer. 



Deadening, n. An area upon which the trees have been deadened. 



Dense, a. See Crown density. 



Diameter breasthig'li. The diameter of a tree at 4J feet above the ground. 



Diameter class. All trees in a stand whose diameters are within prescribed limits. 

 G., Starkeklasse. F. , categorie de grosseur. 



Diameter g-rowth. The increase in diameter of a tree. 

 G., Dickenwachstum. F., croissance en diametre. 



Diameter limit. The diameter, usually breasthigh, which defines the size to which 

 trees are to be measured or used for any given purpose. 

 Syn. : cutting limit. 



Diameter tape. A tape for ascertaining the diameter of trees, so graduated that the 

 diameter corresponding to the girth of a tree is read directly from the tape. 



Dibble, n. A tool for making holes for planting seeds or young trees. 

 G., Setzpfahl. F., plangon. 



Dibble in, to. To plant seeds or young trees in holes made with a dibble. 



Direct returns. See Forest products. 



Dominant, a. Having the crown free to light on all sides because of greater height. 

 See Crown class. 



G., herrschend. F., dominant. 



Drill planting-. See How planting. 



Dry pruning-. See Pruning. 



Dry topped. Having a dead or a partially defoliated crown, or discolored foliage, as 

 the result of injury or disease. 



Syn.: stagheaded. G., gipfeldiirr. F., couronne. 

 Duif, n. See Litter. 

 Even-aged forest. See Regular forest. 

 Expectation value. See Forest expectation value. 

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