9 22 



Cut 



improvement, naval stores trees, 



295 



regulation, 323, 701 

 Cut Foot Experimental Forest, 314 

 Cutting 



age, factor of decay, 463, 4<>5 

 clear 



in small forest, 221 



methods, 700 



cycles, Black Hills, 322-323 

 diameter-limit method, 221-222, 



295 

 effect on water yields, 598-599, 



600-601 



effects on stream flow, 607 

 grade and sustained yield, 1945, 



675 



harvest, definition, 221-223 

 improvement 



instructions, 219 



results, 22, 317 



in California pine forests, 355-6 

 liberation 



definition, 22 



value and methods, 220 

 methods, 350-351, 568, 700 

 partial, results, 126, 463 

 patch, 331-332, 334 

 practices 



laws governing, in West, 276 



private and public forests, 33 

 salvage, value and methods, 



220-221 

 seed-tree method in small forest, 



221, 223 

 selective value and process, 222, 



282 



studies at Wind River, 171-172 

 timber and water yields. H. 



G. Wilm, 593-602 

 to control spruce budworm, 426 

 tools, 688-693, 698-699 

 Cypress 

 Arizona 



Cupressus arizonica, 72, 75, 

 807 



See also Cypress, smooth. 

 Cupressus, 807 

 Italian, Cupressus sempervirens, 



820 

 Lawson (Port-Orford-cedar), 



Cbamaecyparis lawsoniana, 47, 



81, 84 

 Monterey, Cupressus macrocarpa, 



77, 198 



smooth (Arizona cypress), Cup- 

 ressus arizonica (syn. C, 



glabra), 75 

 Southern (baldcypress), Taxo- 



dium distichum, 15 

 Cypress-pine, Callitris, 434 



2,4-D, for killing ribes, 457 

 DDT 



air application, 473 



cost, 476 



effect on fish, 476 



Index 



DDT Continued 



for Dutch elm disease, 452 

 spray preparation, 473 

 use against 



forest insects, 411, 431, 435, 



436-442, 447 



shade tree insects, 99, 100 

 Damping-off of seedlings, 165 

 Dams 



effect on fish, 583 

 fot watershed, 606 

 DANA, SAMUEL T.: Education in 



Forestry, 655-658 

 Date, canary, Phoenix canariensis, 



63 

 DAYTON, WILLIAM A.: Forest 



Types of U. S., 109-114 

 Debris basins, 606 

 Decay 

 losses from, 623 

 of wood 



cause, 627, 630-631 

 prevention, 619, 627 

 Deer 

 age, 27 



and acorns, 571 

 and livestock, 27 

 in Utah, 573-580 

 management, 566, 567 

 on Blue Ridge, 589 

 white-tailed, 566, 591-592 

 Defoliators 



control, 409-411, 473 

 damage, 408 

 Delaware, State tree, 17 

 Den trees, for wildlife, 562 

 Denmark, research in pine hybrids, 



150 

 Desertwillow, Chilopsis linearis, 



70, 848 

 Devils-walkingstick, Aralia spi- 



nosa, 131, 133 

 Dichlorophenoxyacetic acid. See 



2, 4-D. 



DIETZ, MARTHA A.: Forest Re- 

 sources and Nation's Economy, 

 721-730 



Dimension stock, definition, 646 

 Discoloration 



avoidance, 631-632 

 causes, 630 



Disease, Dutch elm, R. U. Swingle, 

 R. R. Whitten, E. G. Brewer, 

 451-452 

 Diseases 



and forest. L. M. Hutchins, 



443-445 



control, 413-417 

 damage to pine, 354 

 introduced. G. F. Gravatt, D. 



E. Parker, 446-451 

 nonparasitic, causes, 443-444 

 of planted trees, 217 

 of shade trees, 93 

 seedling, in South, 212 

 Distillation 



central, process, 288-289 



Distillation Continued 

 destructive 

 history, 641 

 in chemical wood processing, 



639 



process, 289 



products, demand, 740-741 

 steam-solvent process, 289 

 Dogwood 



Chinese Kousa, Cornus kousa 



var. chinensis, 46 

 Cornelian-cherry. See Cornelian- 

 cherry. 

 Cornus, 176, 564, 568, 74l, 775, 



809 

 flowering 



cornus florida, 61, 562, 775 

 See also Dogwood, white. 

 Kousa, Cornus kousa, 46 

 Pacific, Comas nuttalli, 809 

 pink (redflowering dogwood) , 

 Cornus florida var. rubra, 46 

 white (flowering dogwood) , 



Cornus florida, 46 

 Dormancy, 132-133 

 Douglas-fir 



Pseudotsuga taxi folia, 60, 71, 85, 

 144, 145, 170-171, 327-334, 

 352, 423, 803-804 

 region 

 extent, 326 



timber depletion, 720 

 tussock moth, 436-442, 473 

 DOWDEN, P. B.: The Spruce Bud- 

 worm, 423-427 

 DOWNS, ALBERT A.: Trees and 



Food from Acorns, 571-573 

 Drain on timber, 34 

 Drainage basin, definition, 29 

 Dressing compounds for trees, 90, 



96 



Drying wood, processes, 620-623 

 Dude Ranchers' Association, 554 

 DUFFIELD, J. W.: Pine breeding in 



U. S., 147-153 



Duke University, forestry, 121, 656 

 DUNNING, DUNCAN: Pine Forests 



of California, 352-358 

 Dusting, for insect control, 472 

 Dutch Elm Disease 



R. U. Swingle, R. R. Whitten, 



E. G. Brewer, 451-452 

 air surveys, 472 

 control, 45, 46 

 introduction, 443, 446 

 relation to bark beetles, 415-416, 



447-448 



resistance, 445, 468-469 

 DUTHIE, GEORGE A.: Community 



Forests, 394-398 



Dwarf mistletoes. Lake S. Gill, 

 Jess L. Bedwell, 458-461 



East 



air surveys of insects, 471-472 

 direct seeding, 139 

 forests, present condition, 717, 

 718, 719 



