98 JOURNAL OF FORESTRY 



Transplant board. An implement used in setting seedlings in transplant rows or 

 beds. The principle of the tool is a device which holds the trees in place in a 

 notched board so that a number may be planted at a time. 

 Trap tree. A tree felled or girdled for the purpose of collecting injurious insects. 

 Tree analysis. See Stem analysis. 



Tree class. All trees of approximately the same size. The following tree classes 

 are distinguished: 



Seedling. A tree, grown from seed, not yet 3 feet high. 

 Shoot. A sprout, not yet 3 feet high. 

 Small sapling. A tree from 3 to 10 feet high. 



Large sapling. A tree 10 feet or over in height and less than 4 inches d. b. h. 

 Small pole. A tree from 4 to 8 inches d. b. h. 

 Large pole. A tree from 8 to 12 inches d. b. h. 

 Standard. A tree from 1 to 2 feet d. b. h. 

 Veteran. A tree over 2 feet d. b. h. 

 See also Development class. 

 Tree compass. An instrument for measuring diameter, consisting of a pair of 



dividers and a scale bar. 

 Tree form factor. See Form factor. 

 Tree scribe. See Scribe. 

 Tree tape. See Diameter tape. 

 Trench planting. See Forest planting. 

 Trench sowing. See Direct seeding. 

 Trunk. See Stem. 

 Tumus. See Rotation. 



Two-storied forest. A stand in which two height or age classes of considerable 

 difference, usually, are developed or are intended to be maintained, as upper story 

 or overwood and lower story or underwood. The term is not appHcable to forest 

 tinder reproduction, in which the appearance of two stories is the temporary result 

 of an incomplete process, but to those forests of which the two stories of growth 

 are a permanent feature. 



G., Zweihiebig. F., k double etage. 



Underbrush. All large woody plants, which grow in a forest, but do not make trees. 



Under-cut. In forest management the cutting of a quantity of timber less than the 



annual growth of the forest or the predetermined annual cut. See also Lumber 



manufacturing terms. 



Undergrowth. A term used to include underbrush, seedlings, shoots, and small 



saphngs. 

 Underplant. To set out young trees or sow seeds under an existing stand. 

 Under-stock. A growing stock less than the normal growing stock. 

 Underwood. See Composite forest. 



Uneven-aged. Applied to a stand or forest in which considerable differences in 

 age of trees occur, differences varying with the average age of stand or forest. See 

 Even-aged; Selection forest. 



G., ungleichalteriger Bestand. F., peuplement mele. 

 Unit of regulation. See Subdivision, Working unit. 

 Used length. The total length of stem usable in commercial operations. 



