536 INDEX 
Cars, frictional resistance of, 347. 
loading logs on, by crosshaul, 360. 
by power loaders, 360, 360*. 
by special devices, 366. 
logging trucks, 355, 356*. 
movement of earth with, 302. 
narrow gauge, 282, 352. 
number required, 357, 358. 
pole tram road, 280. 
skeleton, 354, 355*. 
stakes for, 353. 
stringer railroad, 282. 
unloading log, 372. 
Carts, log, 185, 187*, 188*. 
Caterpillar tractor, 204. 
Cattle guards, 322. 
Cedar, Port Orford, 14. 
saw tooth patterns for, 85, 85*. 
western red, 7. 
saw timber, stand, per acre, 13. 
regional, 7, 9, 10. 
United States, 7. 
white, buoyancy of, 413. 
Central States, forest area, 3. 
Chain boom, 400, 401. 
Chains, log car, 354. 
log sleds, 159, 174. 
log wagon, 193. 
Channels, artificial, for improving stream beds, 399, 399* 
Cherry, 20. 
buoyancy of, 413. 
Chestnut, 7, 18. 
buoyancy of, 413. 
lumber cut, 1920, 18. 
saw timber, stand, per acre, 18. 
by regions, 7. 
United States, 7. 
Chock blocks, log car, 354. 
Chokers, animal skidding, 150, 151*. 
power skidding, 242. 
Chutes, log, 262, 269*, 270. 
Clearing right-of-way, railroad, 293. 
Climax geared locomotive, 343, 343*. 
Coal, locomotive, 349, 350. 
Coastal Plain region, animal logging in, 145. 
carts for logging, 185. 
hand logging in, 144. 
mule carts used in, 190. 
rafting logs in, 425, 425*. 
Colorado, portable mill operations in, 27. 
Columbia River, rafting logs on, 427. 
Connecticut River, log drive on, 418. 
Contract logging (see logging, contract). 
Contracts, logging, 48. 
"gipo," 49. 
"log cutting," 48. 
Cook house, camp, 63. 
Coppice, best felling season for, 99. 
Corduroy, 167, 319. 
Cordwood, 26. 
