INDEX 553 
Snow shed, 170, 170*. 
Snubbing device, UW, 17(), 17G*, 177*. 
log slide, 275, 270*. 
motor truck, 202. 
Snubbing machine, hydrauHc, 338, 338*. 
Softwoods, eastern, saw timber, stand, regional, 7. 
species, 7. 
United States, 7. 
western, saw timber, stand, regional, 7. 
species, 7. 
United States, 7. 
Sorting gap, 405. 
Sorting logs, 402. 
South Atlantic States, forest area, 3. 
saw timber, stand, species, 7. 
volume, 7. 
Southern pine region, camps, 65, 66*. 
felling and log-making, 32, 101. 
labor, 32, 54. 
log lengths, 110. 
logging methods, 32. 
Spark arresters, 251, 251*, 351, 352*. 
Spars, cableway, 216, 219. 
Spikes, railroad, 325. 
Spiking, back, 327. 
Spreader, 149, 150*. 
Spring board, 92, 92*. 
Sprinlder for a sled road, 172, 175*. 
Spruce, buoyancy of, 413. 
eastern, lumber cut, 1919, 13. 
stand per acre, 13. 
Engelmann, stand per acre, 16. 
log lengths, 110. 
resistance of wood in cross-cut sawing, 86. 
rossing, 116. 
saw timber, stand, regional, 7. 
United States, 7. 
saw tooth patterns for, 85, 85*. 
Sitka, stand per acre, 16. 
western, lumber cut, 1919, 16. 
stand per acre, 16. 
Spur, logging railroad, 295, 295*, 317*, 318. 
Stables, camp, 63, 65, 67, 68*. 
Stakes, log car, 353. 
Standard log lengths, 110. 
Standards, feeding, Wolff-Lehmann, 525. 
Steel laying and lifting, 326. 
Stick, measuring, 95. 
Storage booms, 403. 
Storehouse, camp, 63, 65. 
Streams, driveable, requirements for, 387. 
improvement of, 398. 
large, drive on, 417. 
rafting on, 419. 
small, drive on, 414, 417. 
Stringer railroad, 281. 
capacity, 281. 
cars for, 282. 
construction of, 281. 
disadvantages, 281. 
