INDEX 549 
Pine, western white, lumber cut, 1919, 10. 
saw timber, stand, per acre, 10. 
re{j;ional, 7. 
United States, 7. 
western yellow, lumber cut, 1920, 9. 
saw timber, stand, per acre, 9. 
regional, 7. 
United States, 7. 
Plates, fish, 324, 324*. 
Plowing earth, output per hour, 297. 
Plug boom, 400. 
Pockets, rafting, 426. 
Pole railroad, 278. 
Pole, pike, 415. 
Poles, cutting, 26. 
rafting, 420*, 421, 421*, 423*. 
Poplar, yellow, buovancv of, 412, 413. 
lumber cut, 1920, 17. 
resistance of wood in cross-cut sawing, 86. 
saw timljcr, stand, per acre, 17. 
regional, 7. 
United States, 7. 
saw tooth patterns for, 85, 85*. 
Portable house camp, 65, 66*. 
Potter, 175. 
Powder, black, 310. 
Power, animal draft, 129. 
bucking machines, 90. 
felling machines, 90. 
loaders, 360. 
Power skidding, 214. 
cableway, 215. 
electric drive, 252. 
fuel for, 249. 
relation to forest management, 125. 
slack-rope, 232. 
snaking, 229. 
spark arresters for, 251, 251*. 
Power unloaders, 374. 
Primers and priming, high explosive, 308, 309*. 
Prize logs, 411. 
Puget Sound, rafting on, 426. 
Pullboats, canals for, 233. 
crews for, 237. 
"fantaiUng," 233, 234*. 
operation of, 235. 
output, 238. 
preparation of logs for skidding, 236. 
Pulpwood, 22, 110, 117, 434. 
R 
Raft, bundles, 425, 425*. 
Davis, 429, 429*. 
log, cypress, 424, 424*. 
Great Lakes, 420. 
Mississippi River, 419*, 422, 423*. 
poles for fastening a, 420*, 421, 421*, 423*. 
New Brunswick, 421. 
Northwest, 426. 
