322 APPENDIX 



almost entirely ceased, and decay and deterioration have begun. See 

 also Mature forest. 



Over-stock. A growing stock greater than the normal growing stock. 

 In natural regeneration, a condition of an excessive number of indi- 

 viduals hindering each other in development and retarding desirable 

 differentiation into crowii classes. 



Overwood. See Composite forest. 



Park forest. A forest in which the trees stand apart from one another 

 or in detached groups. A very open forest in which usually also the 

 characteristic forest floor is replaced by grasses. 



Periodic annual increment. See Increment. 



Periodic increment. See Increment. 



Permanent type. See Forest type. 



Physical factor. Any inorganic component of a site capable of influenc- 

 ing its forest-producing power, such as altitude, slope, aspect, soil, and 

 subsoil. See Site. 



Physical type. See Site. 



Pit planting. See Forest planting. 



Planted forest. See Forest plantation. 



Planting area. See Forest planting. 



Planting board. See Transplant board. 



Planting plan. See Forest planting and working plan. 



Planting stock. See Forest planting. 



Pole. See Tree class. 



Polewood. See Development class. 



Pollard, n. A tree whose crown has been cut back to invite the produc- 

 tion of shoots. 



G., Kopfholz. F., tetard. 



Pollard, V. Lopping the top of a tree to invite the production of shoots 

 from the top. 



G., kopfen. F., 6teter, 6cimer. 



Possibility. (06j.) See Regulation of cut. 



Preparatory cuttings. See Reproduction, Shelterwood method. 



Preparatory stage. See Reproduction, Shelterwood method. 



Present yield table. {Obs.) See Yield table. 



Price increment. See Increment. 



Profit. See Income. 



Progress map. See Working plan control. 



