Forest, Hostility toward, 260. Forest, Mixed, 204, 213, 214. Forest, Northern, 197, 216. Forest, Pacific, 197, 204-208. Forest, Productive, 274-277. Forest, Protective, 271-274. Forest, Puget Sound, 206. Forest, Regular Seed, 281. Forest, Rocky Mountain, 197, 204, 205. Forest, Seed, 297-282. Forest, Selection, 280-281. Forest, Southern, 197. Forest, Subarctic, 209. Forest, Two-storied Seed, 282. Forest, Use of, 271-287. Forest, Utilization of, 271-277. Forest, Virgin, 280. Forest, Western, 197. Forestry, 271-287. Forests, Composition of North American, 197. Forests, National, 228. Forests and agriculture, 258, 277. Forest conditions, 211-228, 278. Forest conservation, 262. Forest cover, 204, 211, 212, 224. Forest crop, 274, 276. Forest devastation, 261. Forest fires, 251-258, 261. Forest floor, 213, 224. Forest improvement, 284-286. Forest map, 198. Forest organism, The, Chapter V., pp. 211-228. Forest ownership, 262. Forest planting, 282-284. Forest preservation, 277-284. Forest products, 276. Forest Service, U. S., 262, 264, 275. _Fraxinus americana_, 190. _Fraxinus nigra_, 182. _Fraxinus oregona_, 184. _Fraxinus pennsylvanica_, 188. _Fraxinus quadrangulata_, 186. Frost, 232. Frost-check, 232. Fungi, 20, 233-239. Ginko, 12. Gluing, 54. Goats, 240. Grain of wood, 19, 30, 31, 32-37, 53. Grain, Bird's eye. Grain, coarse, 32. Grain, cross, 33, 53. Grain, curly, 35. Grain, fine, 32. Grain, spiral, 33. Grain, straight, 33, 53. Grain, twisted, 33. Grain, wavy, 34. Grazing, 239. Group system, 279. Grubs, 243, 244. Gum, Black, 180. Gum, Sour, 180, 301. Gum, Sweet, 160, 301. Gymnosperms, 9. Hackberry, 297. Hackmatack, 76. Hardness of wood, 41, 54. Hardwoods, 12. Heart-wood, 13, 17, 18, 19, 290. Hemlock, 90, 295. Hemlock, Black, 92. Hemlock, Western, 92, 206. _Hicoria alba_, 118. _Hicoria glabra_, 122. _Hicoria ovata_, 120. Hickory, 118-123, 298. Hickory, Big-bud, 118. Hickory, Black, 118. Hickory, Shagbark, 120. Hickory, Shellbark, 120. Hickory, White-heart, 118. High Forest, 281. Holly, 301. Honeycombing, 48. Hornbeam, 124. Horn-tails, 246. Hygroscopicity of wood, 41. _Hymenomycetes_, 234. Ice, 232. Ichneumon fly, 247. Identification of woods, 289-303. Improvement of forests, 284-286. Inflammability of bark, 14, 251. Insects, 240-248. Insects, parasitic, 247. Insects, predaceous, 247. Intolerance, 216, 219, 221. Iron-wood, 124. _Juglans cinerea_, 114. _Juglans nigra_, 116. _Juniperus virginiana_, 110. Key for the distinction of woods, 292-303. King-nut, 118. Knot, 35, 37, 38. Larch, 76. Larch, Western, 78. _Larix americana_, 76. _Larix laricina_, 76. _Larix occidentales_, 78. Leaves, 14, 216. Lenticels, 14. _Lepidoptera_, 241. Light, 216-218. Lightning, 231, 251. Lignin, 16. Linden, 178. _Liquidambar styraciflua_, 160. _Liriodendron tulipifera_, 158. Localized Selection system, 281. Locust, 166. Locust, Black, 166, 296.