FOREST MANAGEMENT--CONTINUED. 
Thinning and Pruning 
1438. AYERS, J. H. Pruning on the Rogue. N. Y. 
State Ranger Sch, Alumni News 1951:32-35,38. 99.9 N487 
Rogue River National Forest, Oregon. Includes costs, 
with discussion of allocation of funds derived from timber 
sales on the area. 
1439. BOND, W. E, Financial maturity—a guide in 
thinning. La. State U. Sch. Forestry, Annu. Symposium 
Proc. 1:83-87. 1952. 99.9 L935 
1440. BRAMBLE, W. C., and SCHMIDT, O. A. Prun- 
ing red pine plantations for quality lumber. Pa. Agr. 
Expt. Sta. B. 546,10 p. Nov.1951. 100 P381 
Includes time and cost analyses of operations on Penn- 
sylvania State College plantations. 
1441. BURNS, P. Y., and NICHOLS, J. M. Oak prun- 
ing in the Missouri Ozarks. Mo. Agr. Expt. Sta. B. 581, 
8p. Apr.1952. 100 M693 
1442. COOK, D. B, Justifications for forest pruning 
in the Northeast. J. Forestry 49:487-489. Ref. July 
1951. 99.8 F768 
1443. CONWAY, E. A. It pays to thin red pine early. 
Farm & Home Res. [Ohio Sta.] 34:139-143. Sept./Oct. 
1949. 100 Oh3S 
1444, CUMMINGS, W. H. Post yield, production costs, 
and growth response from first thinning of loblolly and 
shortleaf pine plantations [in the Tennessee Valley]. La. 
State U. Sch. Forestry, Annu. Symposium Proc. 1:99-102. 
1952. 99.9 L935 
1445. DOOLITTLE, W. T., and CAMPBELL, R. A. 
Pruning pays. Forest Farmer 8(8):7,9. May 1949. 
99.8 F7692 
Diagrams grade and value increases in pruned southern 
pine, determined from studies conducted by the U. S. 
Forest Service Southeastern Forest Experiment Station. 
1446. FILIP, S. M. Thinning young oak stands for 
small mine timbers, at a profit. U.S. Forest Serv. No- 
east. Forest Expt. Sta. Sta. Paper 28,13 p. Sept.1949. 
1.9622 N2St22 
Includes production and labor requirements, with costs, 
returns, and computed stumpage per ton. 
1447. GLATTFELTER, C. F. Report on bud-pruning 
of forest trees. Pa. Forests & Waters 4:52-53, 71. 
May/June 1952. 99.8 P38 
Includes productivity statistics, bud-pruning white pine, 
red pine, and Japanese larch. 
1448. HEINSELMAN, M. L. Labor costs for thinning 
young aspen. U.S. Forest Serv. Lake States Forest Expt. 
Sta. Tech. Notes 374,1 p. Apr.1952. 1.9 F7625T 
1449, HUEY, B. M. The profit in pruning western 
white and ponderosa pine. U.S. Forest Serv. North. 
Rocky Mountain Forest & Range Expt. Sta. Res. Note 85, 
6p. July 1950. 1.9622 N3R31 
Also in Timberman 51(11):62,64-65. Sept.1950. 
99.81 T484 yah a 
1450. JACOBSON, N. [Thinnings on a commercial 
operation]. West Forestry & Conserv. Assoc. Proc. 39: 
49-51. 1948. 99.9 W522 
St. Paul and Tacoma Lumber Company. 
1451. JOERGENSON, C. A commercial thinning ex- 
periment in Douglas fir. Brit. Columbia Forest Serv. 
Res. Note 22,22 p. Ref. 1952. 99.9 B77I 
Includes cost analysis of logging, labor, and operations. 
1452. JOKELA, J. J. The economics of jack pine 
thinnings as affected by a fence post market. St. Paul, 
1951. 44p. Ref. 
Thesis (M.S.) - University of Minnesota. 
1453. KANTZER, C. J. Forest thinning by small 
tractors in Mason County, Washington. Wash. Inst. 
Forest Prod. New Wood-Use Ser. C. 17,4 p. Oct.1951. 
99.9 W278N f 
1454. KASTRUSOFF, M. Strip thinning with tractor 
winch, Saskatchewan. Project MS134. Canada Dept. of 
Nat. Resources & Devipmt. Silvic. L. 48,2 p. Sept.1950. 
99.9 C16S 
Includes costs. 
1455. KIEFER, G. C., and RUSS, D. F, Pulpwood 
thinning in Norway spruce. Conn. Woodlands 17:26-27. 
May 1952. 99.8 C76 
Yields and productivity of a thinning in Connecticut. 
1456. LANE, R. D., and FASSNACHT, D. L. Young 
pine plantation thinnings yield merchantable products. 
U. S. Forest Serv. Cent. States Forest Expt. Sta. Sta. 
Notes 51,2 p. Dec.1948. 1.9 F76252S 
Shortleaf pine in Illinois. 
42 
FOREST MANAGEMENT--CONTINUED. 
1457. LORENZ, R. W., and FOX, H. W. Returns from 
pruning a young red pine plantation for Christmas greens. 
Ill. Agr. Expt. Sta. Dept. Forestry, Forestry Note 18,3 p. 
Nov.27,1950. 99.9 IL62 
1458. MCLINTOCK, T. F. Cost of pruning red spruce 
in natural stands. J. Forestry 50:485-486. June 1952. 
99.8 F768 
1459. MINCKLER, L. S., and DEITSCHMAN, G. H. 
Thinning a 13-year-old loblolly pine plantation on claypan 
soil in southern Illinois. U.S. Forest Serv. Cent. States 
Forest Expt. Sta. Sta. Notes 56,2 p. Nov.i949. 
1.9 F76252S 
1460. MUNTZ, H. H. Profit from thinning variously 
spaced loblolly pine plantations. South. Lumberman 177 
(2225):125-128. Dec.15,1948. 99.81 So82 
U. S. Forest Service Southern Forest Experiment 
Station and Louisiana Forestry Commission, cooperating. 
1461. SALMINEN, W. A., and ENGLE, L. G. A young 
hardwood stand is thinned profitably. Timber Prod. As- 
soc. [Ironwood, Mich.] B. 63:9. June 1948. 99.9 T482B 
1462. SCHOLZ, H. F. Thinning young oak stands for 
fuel. U.S. Forest Serv. Lake States Forest Expt. Sta. 
Tech. Notes 336,1 p. Jan.1952. 1.9 F7625T 
1463. SHAW, E. W., and STAEBLER, G, R. Financial 
aspects of pruning. Portland, Oreg., U. S. Forest Serv. 
Pacific Nowest. Forest & Range Expt. Sta.,1950. 45 p. 
Ref. 1.9622 P2F49 
Similar information with title An analysis of invest- 
ments in pruning, in J. Forestry 50:819-823. Nov.1952. 
99.8 F768 
1464. SPURR, S. H. Row thinning. Soc. Amer. 
Foresters Proc. 1947:370-377. 1948. 99.9 Sol3 
Studies conducted in Harvard Forest, Petersham, Mass. 
Discusses economic advantages. 
1465. STIER, R. Problems and the economics of 
timber production on a second growth forest. Forest 
Prod. Res. Soc. J. 1(1):95-97. Sept.1951. 99.9 F7662J 
Some general conclusions about thinning experiments 
conducted cooperatively by the St. Paul and Tacoma 
Lumber Company, and by the U. S. Forest Service 
Pacific Northwest Forest and Range Experiment Station. 
1466. TAYLOR, D. Problems of salvaging the inter- 
mediate cutting. West. Forestry & Conserv. Assoc. 
Proc. 39:45-46. 1948. 99.9 W522 
Also in Timberman 50(5):68,70. Mar.1949. 99.81 T484 
Pope & Talbot operations in Washington. Chiefly 
thinning. 
1467. TINNEY, W. A. Marking trees for profit in the 
Douglas fir region. West. Forestry & Conserv. Assoc. 
Proc. 39:46-49. 1948. 99.9 W522 
Thinning. 
1468. TORHEIM, R. Forest pruning: a gilt-edged in- 
vestment. Wash. U. Forest Club Q. 22(2):18,20-23,25,27- 
28. Apr.1949. 99.9 W275Q 
Includes cost analysis of pruning operation conducted by 
U. S. Forest Service personnel on Douglas-fir. 
1469. WARRACK, %. Thinning and pruning of second- 
growth Douglas fir in the coastal region of British Colum- 
bia. Brit. Columbia Forest Serv. Res. Note 13,8 p. 1948. 
99.9 B771 
Includes costs of pruning. 
1470. WAV4, H. E., WENTWORTH, D. F., and CHAP- 
MAN, G. L. A pruning time study for spruce and white 
pine in unevenaged, natural stands. Maine U. Forestry 
Dept. Tech. Notes 15,2 p. May 1952. 99.9 M284 
Penobscot Experimental Forest of the U. S. Forest 
Service Northeastern For2st Experiment Station, coop- 
erating. : 
1471. WELSH, J. F. The increase in value of certain 
farm woodlots in the Piedmont region of North Caroliaa, 
five years after thinning. Durham,1952. 69 p. 
Thesis (M.F.) - Duke University. 
1472. WORTHINGTON, N. P., and SHAW, E. W. Cost 
of thinning young Douglas fir. Timberman 53(10):136- 
138. Aug.1952. 99.81 T484 
Study conducted by the U. S. Forest Service Pacific 
Northwest Forest and Range Experiment Station in the 
Puget Sound area of Washington, St. Paul & Tacoma 
Lumber Company, cooperating. 
1473. ZASADA, Z. A. Does it pay to thin young aspen? 
J. Forestry 50:747-748. Oct.1952. 99.8 F768 
Product and value yields from thinned and unthinned 
stands; also logging costs, from studies made on the 
Chippewa National Forest, Minn. 
