936 



Pop 1 ar Continued 

 plains (plains cottonwood) , Pop- 



ulus sargentii, 75 

 Populus, 66-67, 154, 156-157, 



179, 789, 810 

 silver, Populus aha var. nivea, 



198 



white, Populus alba, 832 

 Poplars 

 breeding 

 project, 470 

 to order. Ernst J. Schreiner, 



153-157 



hybrid, 155-156 

 Port-Orford -cedar 



Cbamaecyparis lawsoniana, 806- 



807 



See also Cedar, Lawson. 

 Posts, fence. See Fence posts. 

 Potash, need in nursery, 163 

 Potlatch Timber Protective Assn., 



437 



Powder-post beetles, 433 

 Power 



atomic, effect on use of fuel 



woods, 732 

 logging, 689-^93 

 mechanical, uses, 689, 691-693, 



697-698 



water, and forest cover, 725 

 Prairie States 



forestry project, 192 

 shelterbelts, success, 21 

 Precipitation, interception, 594- 



595, 604-605 

 Prefabricated houses. See Houses, 



prefabricated. 

 Prefabrication 

 assembling, 635 

 history in U. S., 634 

 plywood in, 635 

 Prescribed burning 

 definition, 518 



See also Burning, prescribed ; 

 Burning, protective ; Burning, 

 release; Fire. 

 Preservative 



treatment. Thomas R. Truax, 



623-625 



value of paint, 23 

 Preservatives, material treated by, 



842-844 

 Prickly-ash, common, Zanthoxylum 



americanum, 132 

 Pricklypear, Opuntia, 574 

 Private 



forests, cutting practices, 33 

 forestry in West. Chas. L. 

 Tebbe and H. J. Andrews, 

 275-278 

 holdings, in North. Hardy L. 



Shirley, 255-274 



Privet, European, Ligustrum vul- 

 gar e, 130 



Progeny testing of pines, 149 

 Projects 



Norris-Doxey, definition, 22 

 of many uses, 381-405 



Index 



Propagation, vegetative, of pines, 



149 

 Protective burning. See Burning, 



protective. 

 Pruning 



Christmas trees, recommenda- 

 tions, 253 



for control of heart rot, 464 



for mistletoe control, 460 



hardwood trees, 203 



ponderosa pine, recommenda- 

 tions, 351 



result, 22 



transplanted stock, 90 



value and methods, 221 

 Public- 

 domain, unreserved, administra- 

 tion, 383-384 



forest land, cutting practices, 33 



works, lumber requirements, 



1950-55, 737 



Puerto Rico, national forest, 301 

 Pulp- 

 companies 



forest ownership, 262-265, 716 

 management status, 1945, 671 



industry 

 accomplishments, 281, 282- 



283, 284 



cooperation, 670-671 

 spruce budworm threat, 423 



mills 



forest ownership, 290 

 waste, 643 



production, comparison with 

 needs, 1950-55, 730 



semichemical, production, 650 



use in rayon, 723 

 Pulping processes, new, 650 

 Pulpwood 



conservation, 671 



damage, by fungi, 631 



for paper, 154, 156 



from beetle-killed spruce, use, 

 421 



imports, 724 



industry, status, 262, 264-265 



logging, accidents, 678 



measurement, 229 



pen, definition, 229 



planting in Wisconsin, 660-661, 

 672 



production in Alaska, 367, 369- 

 372 



railroad transportation, 683 



requirements, 1950-55, 740 



selling methods, 229 



situation, 255-256 



unit, definition, 229 



use for newsprint, 36 

 Purchasing cooperatives, 184 

 Purdue University, 658 

 Putting unused wood to work. 

 C. V. Sweet, 643-647 



Quarry timbers, requirements, 1999, 

 734 



Quinn, I. T.: Action on Blue 

 Ridge, 586-592 



Raccoon, 561, 590 

 Railroad 



companies, northern holdings, 



262 



construction, maintenance, 736 

 ties. See Ties. 

 Railroads 



and foresters. Robert N. Hos- 



kins, 682-685 

 forest work, 661, 689, 696, 698, 



724 



timber requirements, 736, 738 

 use of preservatives, 623 

 Rain, forest, 29, 594-595, 604-605 

 Ranchers, small, and forests. Wil- 

 liam L. Robb, 358-359 

 RANDALL, CHARLES E.: Some Trees 



Are Famous, 11-13 

 RANDLES, QUINCY: Pinyon- Juniper 



in Southwest, 342-347 

 Range- 

 effect of 



burn ing -off, 28 

 rain, 28 

 forest 



acreage, 726 

 grazing, 28 

 management, national forest, 28, 



302 

 Ranger, forest 



duties, 32, 376-377, 664 

 requirements, 664 



RASMUSSEN, D. IRVIN: Managing 

 Utah's Big-Game Crop, 573- 

 580 



Rasberry, Rubus, 130, 182 

 Rayon 



industry, value, 723 

 production, 641 



Reclamation, Bureau of, work, 611 

 Recovery programs in Europe, 748 

 Recreation 

 Alaska, 372 



equipment selection, 557 

 facilities, 548-549, 551-552, 555, 



892 



forest, economic value, 536 

 in Black Hills, 325-326 

 in North, 269 

 national forests, 30, 551, 855- 



876 



national parks, 545, 889-892 

 safety, 556-560 

 State forests, 393 

 State parks, 547, 548 

 wilderness areas, 537-544, 877- 



882 



Red Cross, and fires, 483 

 Red rot of ponderosa pine, con- 

 trol, 444-445 

 Redbud 



Cercis, 17, 46, 198 



eastern, Cercis canadensis, 62, 70 



See also Judas-tree. 



