928 



Houses Continued 

 stressed-facing, 634 

 wood, 723, 726 

 wood, life of, 23 

 Housing 



farm, status, 735, 736 

 shortage, causes, 735 

 timbers, strength, 649 

 Huckleberry, black, Gaylussacia 



baccata, 130, 131, 132 

 HUGHES, B. O.: Pine Forests of 



California, 352-358 

 Humus, value, 44 

 HUNT, GEORGE M.: Forest Prod- 

 ucts Laboratory, 647-651 

 Hunting 



by Colonists, 564, 568 

 in Utah, 573-580 

 national forests, laws, 554, 555 

 Huron N. F., 309 



HURSH, CHARLES R.: Watersheds 

 and How to Care for Them, 

 603-609 

 HUTCHINS, L. M.: Diseases and 



Forest, 443-445 



Hybridization, pines, 149-150, 153 

 Hybrids 



for timber production, 23 

 inbreeding, 467 

 segregating generations, 466 

 Hydraulic power, uses, 692 

 Hydrocyanic acid gas, as fumigant, 



435-436 



Hydro-electric power, 725 

 Hydrogenation, in wood processing, 



639, 642-643 

 Hydrolysis, in wood processing, 



639, 642 

 Hypsometer, use, 359 



Idaho- 

 experience with deer, 580 

 Forest Industries Information 



Committee, 673 

 laws for cutting practices, 276 

 State forests, 392, 394 

 tussock moth control, 436-442 



Illinois 



county forests, 395 

 forestry in schools, 659 

 municipal forest, 396 



Import trade, timber products, 724 



Imports, seeds and plants, regula- 

 tion, 449-450 



Impreg, uses, 650 



Impregnation of wood, 632 



Inbreeding, disadvantages, 466-467 



Incense-cedar 



Libocedrus decurrens, 806 

 California (incense-cedar), Libo- 

 cedrus decurrens, 81, 84, 352 



Income 



from woodlands, 173-176 

 national, and timber, 728, 730 



India 



forestry, 748 

 termite-resistant wood, 434 



Index 



Indian \,\KJ$ 



lands, administration, 384-385 



trail trees, 12 



Indian Affairs, Bureau, 384-385 

 Indiana 



shelterbelts, 193 



State Department of Public In- 

 struction, 658 



State forest, 390, 394 

 Indians 



in Southwest, 344 



use of acorns, 573 



use of fire, 26-27, 480 

 Industrial Forestry Associations. 



Chapin Collins, 666-675 

 Industrial forests, work, 673 

 Industries 



interdependence, 284 



ownership of forests, 716 



primary manufacturing, 722 



secondary manufacturing, reli- 

 ance on wood, 722 

 Industry 



construction, lumber require- 

 ments, 1950-55, 737 



relation to utilization of wood, 



751 

 Inkberry (gallberry), Ilex glabra, 



131 

 Insect 



carriers 



control by DDT, 452 

 damage, 448-449 



deadening, 410 



epidemics, 412 



increase, prevention, 409-410 



protection on vacations, 550, 558 



surveys, 410 

 Insecticides 



aerial applications, 426, 472, 473 



efficacy in pine beetle control, 



430-431, 432 

 Insects 



bark-boring, control, 99-100 



bark-infesting and wood-boring, 

 97 



control, 99, 413-417 



damage to trees, 217 



diseases and parasites, 407-476 



forest 



in North, 273 

 natural control, 408 

 populations, behavior, 407-408 



in forests: Survey. F. C. Craig- 

 head, John M. Miller, 407- 

 413 



in wood products. Thomas E. 

 Snyder, 432-436 



injury to seedlings, 137 



introduced. G. F. Gravatt and 

 D. E. Parker, 446-451 



losses from, 623 



shade trees, protection from. 



R. A. St. George, 97-100 

 Institute of Forest Genetics 



establishment, 148 



work, 146, 149, 150, 151, 152, 

 468 



Insulation in prefabricated houses, 



635, 636 



Insurance, compensation, 271 

 Interior Department 

 administration of 



Indian lands, 384-385 

 public domain in Alaska, 364 

 revested lands, 381 

 jurisdiction over fish and wild- 

 life, 387 



Intermountain region 

 forest types, 109-110 

 forester, regional, address, 556 

 International Poplar Commission, 



156 



Inventory 

 forest 



Douglas-fire region, 329-330 

 new method, 319 

 nursery, 166-167 

 timber from photographs, 681- 



682 



Investments in forest resources, 722 

 Ipil, Intsia, 434 

 Ips spp., habits, 427, 428 

 Iron Range Resources and Rehabili- 

 tation Commission, 318 

 Ironbark, red (red-ironbark euca- 

 lyptus), Eucalyptus sideroxy- 

 lon, 77 

 Irrigation 

 nursery, 162 

 role of forests, 726 

 ISAAC, LEO A.: The Wind River 

 Experimental Forest, 169-172 

 Italy, botanical gardens, 400 



JACKSON, ANDREW, memorial trees, 

 12 



JACKSON, SETH: Prescription for 

 Woods Safety, 676-679 



Japanese beetle 



damage to shade trees, 98 

 introduction, 446 

 susceptibility of poplar hybrids, 

 156 



JEFFERSON, FRANK J.: Fire on 

 Cedar Creek, 498-508 



JEFFERSON, THOMAS, 11 



JEFFERSON N. F., wildlife plan, 

 587-592 



Jeffrey pine beetle, 427 



Jetbead, black, Rhodotypos scan- 

 dens, 133 



John Quincy Adams Elm, 11 



JOHNSON, FRED W.: Forests and 

 Fish, 581-585 



JOHNSON, R. P. A.: The Wood for 

 the Job, 615-619 



Joint Committee on Housing, 80th 

 Cong., 735 



Joints. See under specific kinds. 



JONES, G. WILLARD: Job of Plant- 

 ing Trees, 206-209 



Judas-tree ( redbud ) , Cercis, 46 



Jujube, common, Ziziphus jujuba, 

 131 



