282 PRACTICAL 
Prescott Reservation, 238. 
Protection, forest, 150-177. 
Pruning, defined, 144. 
Prunus, persica, 79; 
267. 
Pseudotsuga tavifolia, in Europe, 
73, 98; in the United States, 
106-107, 257. 
Pulp, uses of, 184, 198-201. 
Pyrenees, wattlework in the, 57- 
58. 
Pyroligneous acid. 
acid. 
serotina, 
See Acetic 
Quebracho-wood, use of, in tan- 
ning, 207. 
Quercus, method of regeneration, 
140; use of bark in tanning, 
140, 206; cork from, 209; rubra, 
73, 93; 264: alba, 262; mi- 
chaurti, 263; acuminata, 263, 
virginiana, 263; densiflora, 263; 
prinus, 264; macrocarpa, 264; 
platanoides, 264. 
Quinin, 220. 
Rafn, J., quoted, 109, 112. 
Railroads, and forests, 155-156, 
160. 
Rainfall, influence of forests on, 
59; damage caused by, 165. 
Rainier, Mount. See Mount Rai- 
nier. 
Razoumofskya, 174. 
Redwood. See Sequoia. 
4 
Reforestation, defined, 5; 
secured, 15. 
Refuse, utilization of, 178-186. 
Regeneration of-forests, 91; arti- 
how 
ficial, 99-129; natural, 129- 
133; systems of, 134-142. 
Reservations, forest, in the 
United States, 172-1738, 228- 
246. 
Resin, how obtained, 204-206. 
Rhine delta, 58. 
Rhizomes, of weeds, 176. 
Rhizophora mangle, as land form- 
er, 48-49. 
FORESTRY 
Rhus, toxicodendron, 176; 
nata, 176; metopium, 177. 
Ribbentrop, quoted, 7. 
Ring, annual, 40. 
River-driving, 190-192. 
Roads, forest, 30, 159. 
Robinia pseudacacia, in Europe, 
71, 73, 93; seeds of, 102; uses 
of, 160; in the United States, 
268. 
Rocks, disintegration of, 51. 
Rome, sanitary condition of, 66. 
Romero of Mexico, quoted, 2T. 
Root-fibrils, functions of, 38. 
Roots, as soil formers, 51; as 
soil fixers, 57. 
Rope, made from bark, 209. 
Rosin. See Resin. 
Rotation, in forestry, 17, 55. 
Roth, F., 246. 
Rubber. See Castilloa elastica; 
Hevea brazilensis. 
Rust, 174. 
vene- 
Saliz, in basketry, 16, 20, 23; as 
soil former, 50-51; as soil fixer, 
58; propagation of, 76, 118, 
126; pollarding of, 183. 
Sand-box-tree. See Hura crepi- 
tans. 
Sands, shifting, 56-57; fixation 
of, 97-98. 
Sandwich Islands, candle-nut in 
the, 220. 
San Francisco Mountains Reser- 
vation, 237. 
Sanitary functions of forests, 
65-68. 
Sapucaia-nut. 
cajo. 
Savanna land, how formed, 84. 
Sawmills, 187-188; portable, 195; 
in the West, 197. 
Saxony, forestry in, 16; spruce 
in, 92, 199. 
Schuberg, 
149. 
Serub, defined, 5. 
Seed, collection of, 32; germina- 
See Lecythis zabu- 
Professor, quoted, 
