No. 972.

FOREST LAND-TOTAL AND COMMERCIAL, BY STATES: 1963
[In thousands of acres. As of January 1]

Represents zero.

1 Comprises all land which was (a) producing, or physically capable of producing, usable crops of wood, (b) economically available on date shown or prospectively, and (c) not withdrawn from timber utilization. Source: Dept. of Agriculture, Forest Service; Timber Trends in the United States, 1965.

No. 973. SAWTIMBER AND GROWING STOCK-GROWTH AND CUT, 1962, and Volume, 1963, ON COMMERCIAL FOREST LAND, BY STATES

[Sawtimber comprises all live trees of commercial species which contain at least 1 saw log defined as follows: Softwoods must be at least 9.0 inches in diameter, breast height, except in California, Oregon, Washington, and coastal Alaska where the minimum diameter is 11.0 inches. Hardwoods must be at least 11.0 inches in diameter in all States. Growing stock comprises all live sawtimber trees, poletimber trees, saplings, and seedlings meeting specified standards of quality or vigor; excludes cull trees]

1 Comprises natural growth and excludes catastrophic losses.

* Sawtimber and poletimber trees removed from inventory by harvesting, land use change, or silviculture treatment. 3 As of Jan. 1. Includes States not shown separately.

Source: Dept. of Agriculture, Forest Service; Timber Trends in the United States, 1965.

No. 974.

NATIONAL FOREST LANDS AND PURCHASES: 1940 TO 1966

[Area as of June 30, purchases for years ending June 30. Includes Puerto Rico. Lands to be purchased must be approved by National Forest Reservation Commission, which also sets prices at which such lands may be acquired. Actual purchases are made by Department of Agriculture. See also Historical Statistics, Colonial Times to 1957, series L 1-5]

1 Comprises all publicly and privately owned land within authorized boundaries of national forests, purchase units, experimental areas and land utilization projects. Excludes lands in process of acquisition.

Source: Dept. of Agriculture, Forest Service; annual report, National Forest System, and National Forest Reservation Commission; Annual Report.

No. 975. NATIONAL FOREST LAND PURCHASES-STATES AND PUERTO RICO:

CUMULATIVE TO JUNE 30, 1966

[Under Act of Mar. 1, 1911, as amended by Act of June 7, 1924, and other related acts. See headnote, table 974]

No. 976. NATIONAL FORESTS-SUMMARY: 1940 To 1966

[Money figures in thousands of dollars. For years ending June 30, except as noted. Includes Alaska and Puerto Rico, except as noted. See also Historical Statistics, Colonial Times to 1957, series J 41-42 and L 7-22]

Represents zero. NA Not available.

1 Number permitted to graze. Beginning 1960, figures include national grasslands and land utilization project lands. Calendar-year data. Excludes Puerto Rico. 2 Excludes animals under 6 months of age.

* Includes forest highway construction. Includes national grasslands.

Includes all National Forest system lands. Includes land exchanges.

7 Includes some free use timber not reducible to board feet.

Payments made in following year. • Total for 1948 through 1956 was $597,133.

10 For use in following year.

Source: Dept. of Agriculture, Forest Service. In annual report, Agricultural Statistics, and unpublished data. No. 977. NATIONAL FOREST AND OTHER LANDS-STATES AND PUERTO RICO: 1966 [In thousands of acres. As of June 30. See footnote 1, table 974. See also Historical Statistics, Colonial Times to 1957, series L 1-2]

Source: Dept. of Agriculture, Forest Service; annual report, National Forest System.

247 079 O 67 43

No. 978. FOREST TREE DISTRIBUTIOn Program and Costs: 1930 to 1966

[For years ending June 30, except calendar years for trees, 1930 to 1945. Excludes Alaska; includes Puerto Rico]

Source: Dept. of Agriculture, Forest Service. In annual report Agricultural Statistics.

No. 979. FOREST FIRES-NUMBER, AND AREA BURNED OVER: 1940 to 1966 [Area in thousands of acres. For years ending December 31. See also Historical Statistics, Colonial Times to 1957, series L 100-105]

1 Prior to 1952, excludes Hawaii, and 1959, Alaska; comprises national forests, public domain, land administered by Dept. of the Interior, Soil Conservation Service, TVA, etc.

2 Prior to 1960, excludes Alaska. Includes 298,107,000 acres of nonforest watershed areas under Dept. of the Interior protection. Excludes an area burned on the acreage shown in footnote 3.

$ Includes 20,525,000 acres of nonforest watershed areas for 1964, and 51,092,000 acres for 1965 and 1966. Source: Dept. of Agriculture, Forest Service; annual report, Forest Fire Statistics, and unpublished data.

No. 980. FOREST FIRES-NUMBER, BY CAUSE, AND EXPEnditures for CONTROL: 1940 To 1966

[Expenditures in thousands of dollars. See also Historical Statistics, Colonial Times to 1957, series L 106-109]

NA Not available. 1 Fires on protected forest lands only. 1940 excludes Alaska. 2 Prior to 1963, lumbering and railroads included in "Miscellaneous"; thereafter, in various other classifications. 3 For fire protection on State and private forests lands only, years ending June 30. 1940 to 1960, excludes Alaska. Source: Dept. of Agriculture, Forest Service; annual report, Forest Fire Statistics, and unpublished data.