652 INDEX 
Skidding, Lake States, 31. 
New England, 26, 29. 
Northwest, 34. 
power, relation to forest management, 125. 
pullboat, 33, 233. 
southern yellow pine, 32. 
spreaders for, 149, 150*. 
West Virginia, 36. 
Skids, balanced, for loading aerial tramways, 256. 
fender, timber slide, 263. 
hardwood, for log wagon, 193. 
Skidways, 136, 137*, 139*, 140*, 141*. 
capacity, 139. 
loading logs from, 141, 142, 174. 
railroad haul, 141, 141*. 
sled haul, 136, 137*. 
wagon haul, 141, 191*. 
Skipper, grab, 152, 152*. 
road, 147, 148*. 
Slack puller, cableway skidder, 218, 219. 
Slack-rope system, power logging, 232, 233, 238, 239, 243. 
Sledge, 92. 
Sleds, 157, 157*, 159*, 162*, 181*. 
bob, 161. 
chains for, 160, 175. 
go-devil, 157, 157*. 
hauling with, 173. 
jumbo, 161. 
Hzard, 158. 
loading, 174. 
roads for, 164, 164*, 165, 165*. 
scoot, 26. 
two-sled, 161, 162*. 
chains for, 174. 
yarding, 158, 159*. 
Slide, timber, 262, 262*, 263*, 264, 264*, 265*, 266*, 267*. 
trail, 263. 
Slides, log, brake for, 275. 
capacity of, 275. 
checking speed on, 274, 275. 
construction of, 263, 264, 267, 271. 
curves on, 272. 
earth, 263. 
grades on, 271. 
life of, 266. 
maintenance of, 277. 
operation of, 273. 
rail, 270. 
sawed timber, 266*, 267, 267*. 
snubbing device for, 275, 276*. 
Slope, effect on felling output, 102. 
effect on skidding output, 153, 154, 155. 
Sluice gates, 393. 
Sluice, log, 433, 437. 
Snaking, animal, 145, 146*, 147*, 148*. 
equipment for, 149, 150*, 151*, 152*. 
power, 229, 230*. 
Sniping logs, 117. 
Snow, effect on skidding output, 154, 155. 
Snow plows, 171. 
