INDEX 555 
Tramways, aerial, 35, 255. 
capacity, 256, 257, 259, 261. 
endless cable, 260. 
gravity, 255. 
hangers for, 259, 2()0*. 
single wire, 256, 257*, 258*. 
troUeys for, 259, 260*. 
Transportation, 121. 
primary, 126. 
secondary, 123. 
Travois, 157, 157*. 
Tree faller, 94, 94*. 
Trestle, flume, 438, 439*, 440*. 
framed, 314, 316, 316*. 
pile, 313, 314*. 
Trolley, aerial tramway, 256, 257*, 258*, 259, 260*. 
cableway skidder, 217, 219*, 222, 224, 226. 
Truck, logging, 355, 356*. 
motor, 35, 198. 
adaptability to logging, 198. 
capacity, 202. 
loading, 202. 
roads for, 200. 
trailers for, 200. 
types, 199. 
use on a stringer road, 283. 
Tug, log towing, 417. 
Turnout, logging railroad, 325, 326*. 
Turpentine ax, 83, 83*. 
Two-sled, binding chains for, 174. 
hauling with, 161. 
loading, 174. 
roads for, 165. 
U 
Undercut, felling, 105. 
Undercutter, 97, 97*. 
Unions, labor, 53. 
United States, eastern, timber owTiership in, 4. 
forest area, 3. 
timber, volume of, 3. 
Unloaders, power, 374. 
Unloading log cars, 360. 
cableway system, 375. 
gill-poke, 377. 
hand methods, 372. 
labor required, 54. 
log dump for, 375, 376*, 378*. 
rollways for, 372, 373*. 
motor trucks, 202. 
wagons, 194. 
Vehicles, wheeled, 184. 
Wage, basis of payment, 43. 
Wages, factors which influence, 50. 
W 
