the species, the number oE stems and tUeir age per unit of 

 area. 



nominaiit tree.— A tree which has raised its crown above 

 tlie level of the surrounding trees. See Crown. 



Dominated tree.— A tree of which the crown is overtopped 

 by the surrounding trees. 



Even-aged crop.— A crop of trees of approximately the 

 same age. 



EvergTeeu tree.— A tree, thb leaves of which persist at 

 least for an entire year, so thai it is never leafless. 



Exploitable tree.— A tree that has attained its maximum of 

 usefulness for the owner of the forest. 



Factors of the locality.— Local conditions influencing forest 

 growth, suoh as elevation above mean sea-level, soil, slope^ 

 aspect. 



Gregarious species or tree.— Trees which have a tendency 

 to form pure crops of their own species. Such species may 

 also be called exclusive. 



Growing stoclt.— AH the living material actually standing 

 in a forest or in part of a forest at a certain time. See 

 Crop 



Hardwood trees or hardwoods.— Trees which possess a well 

 defined heartwood. 



Herbage.— A low growth of small plants which never- 

 become woody. 



High forest.— A forest composed wholly or mainly of trees- 

 grown from seed. See Crop. 



Incomplete crop.— A crop in which there is not a sufficient 

 number of individuals, so that the trees form an interrupted 

 leaf -canopy which only partially shelters the gfouad. 



Interrupted crop.— A crop composed of trees whose crowns 

 do not interlace and so form an irregular leaf-canopy which 

 OBly partially shelters tlie grounds 



Irregular forest.— Uneven-aged forests. See Uneven-aged 

 crop. 



Leaf canopy .--The mass of foliage formed by the crowns 

 r,i a collection of tri es in a forest, ^ 



light demanding tree.— A species of tree which thrives 

 best under the influence of direct light. 



