TEEMS IN FORESTRY. 15 



Locality, n. An area, considered with reference to forest-producing power; the 

 factors of the locality are the altitude, soil, slope, aspect, and other local conditions 

 influencing forest growth. 

 Syn. : site. G., Standort. F., station. 



Locality class. All localities with similar forest-producing power. 



Syn.: quality of locality. G., Standortsgiite, Standortsbonitat, Bonitat. F., 

 qualite de la station. 



Log" rule. 1. A tabular statement of the amount of lumber which can be sawed 

 from logs of given lengths and diameters. 



2. A graduated stick for measuring the diameters of logs. The number of board 

 feet in logs of given diameters and lengths is shown upon the stick. 



Syn. : log scale, scale rule. 



Lo^ scale. See Log rule. 



Lower story. See Two-storied forest. 



Low pole. See Pole. 



Major products. See Forest products. 



Major ride. See Compartment line. 



Many-ag'ed forest. A forest through all parts of which many different age classes of 

 trees tend to distribute themselves. When all age classes are thus distributed, the 

 forest is all-aged. These two terms replace selection forest, many-aged being substi- 

 tuted for imperfect selection, and all-aged for perfect or ideal selection. 



Marking- hatcliet. A hatchet for marking trees. A raised die is cut on the head 

 for stamping the face of the blaze. 



Mature forest. Forest so old that growth in height is practically at an end and 

 diameter growth is decreasing. 



Mean annual increment. The total increment of a tree or stand divided by its 

 age in years. 



Mercliantable leng-tli. The total length of that portion of the stem w^hich can be 

 used under given conditions. 



Syn. : possible merchantable length. 



Mercliantable volume. The total volume of that portion of the tree which can be 

 used under given conditions. 



Syn. : possible merchantable volume. 



Method of successive thinnings. See Stand method. 



Mild humus. Humus in a condition favorable to forest growth. 



Syn. : forest humus. Ant. : sour humus. G. , milder Humus. F. , terreau forestier. 



Minor products. See Forest products. 

 Minor ride. See Compartment line. 



Mixed forest. Forest composed of trees of two or more species. 

 G., gemischter Bestand. F., peuplement melange. 



Mixed seedling and sprout forest. See Composite forest. 



Mold, n. See Humus. 



Mother tree, n. See Seed tree. 



Mound planting, A method of planting on wet ground, in which the seeds or 



young trees are planted on mounds, ridges, or hills. 

 Syn.: hill planting, ridge planting. G., Hiigelpflanzung. F., plantation en 



buttes. 



