FOREST TER MIXOLOGY 9 



Bunk spikes. Sharp spikes set upright in the bunks of a logging sled to hold 



the logs in place. (N. F.) 

 Burner, w. See Eefuse burner. 

 Burton, n. In logging, a tackle composed of two or more blocks which is used 



to increase the hauling power of the pulling line. The log is attached to a 



block in the bight of the running part. (P. C. F.) 



Bush a road, to. To mark the route of a logging road across a marsh or the ice 

 by setting up bushes. (N. F.) 



Busher, n. See Swamper. 



Bush monkey. One who piles tanbark in a California forest. (P. C. F.) 



Bush out, to. See Brush out, to. 



Butt, n. The base of a tree, or the big end of a log. (Gen.) 



Butt, V. See Trim. 



Butt chain. See Bitch chain. 



Butt chain block. See Bull block. 



Butt cut. 1. The first log above the stump. (Gen.) 



Syn.: butt log. (Gen.) 



2. In gathering tanbark, the section of bark taken from the butt of a tree 

 before felling it for further peeling. (N. F.) 



Butt hook. The hook bv which the cable is attached to the tackle on the logs. 

 (P. C. F.) 



Butting saw. See Cut-oif saw. 

 Butt line. See Bitch chain. 

 Butt log. See Butt cut. 



Butt off, to. 1. To cut a piece from the end of a log on account of a defect. 

 (Gen.) 



Syn.: log butt, to. (P. C. F., App., N. W.) 



2. To square the end of a log. (N. F.) 

 Buttress, n. A wall or abutment built along a stream to prevent the logs in a 

 drive from cutting the bank or jamming. (Gen.) 



Syn.: crib. (App.) 

 Butt saw. See Cut-off saw; Drag saw. 



Butt-saw man. On a timber dock, one who operates a butt saw. (Gen.) 

 Butt team. See Wheelers; Snub-yoke. 



B3rrkit lath. A patent backing for plaster which is made from low-grade lum- 

 ber manufactured into a special pattern. (Gen.) 



Syn.: patent lath, sheathing lath. 



Cableway skidder. A power skidding device, a distinguishing feature of which is 

 a main cable suspended between a head-spar tree and a tail tree on which the 

 trolley travels which whollv or partially elevates the logs from the ground. 

 (Gen.") 



Syn.: aerial skidder, flying machine. (P. C. F.) 

 Cache, n. A storehouse for logging camp supplies. (E. C.) See Headquarters. 

 Caliper measure. A method of measuring square or roughly hewn logs. The 

 thickness and breadtli of the log is calipered at the middle and the cubi«* 



B X T X L 



content determined as follows: -— =C, in which B equals the 



144 



breadth, T tlie thickness, L the length, and C cubic feet content. All breadth 

 and thickness measurements are taken to the nearest one-fourth inch. I^^ngth 

 measurements for logs containing less than 5 cubic feet are taken to the 

 nearest one-fourth foot, and the contents to the nearest one-tenth cubic foot; 

 logs containing more than 5 cubic feet, 8 inches square or under lOVL' f'^^'t in 

 Jength, have their h-ngtii measured to the nearest one-half foot and the cubic 



