that part for the ensuing year unless and until an appropriation applicable to the payment thereof is made: And provided further, That all such contracts shall by their terms provide that the obligation of the United States is contingent upon the passage of an applicable appropriation and that no payment thereunder will be made until such appropriation becomes available for expenditure. (June 30, 1932, 47 Stat. 473; 16 U. S. C., sec. 557a.)

1038. Leave of absence; employees of the Forest Service assigned to permanent duty in Alaska.-That hereafter the employees of the Forest Service who are assigned to permanent duty in Alaska may, in the discretion of the Secretary of Agriculture, without additional expense to the Government, be granted leave of absence not to exceed thirty days in any one year, which leave may, in exceptional and meritorious cases where such an employee is ill, be extended, in the discretion of the Secretary of Agriculture, not to exceed thirty days additional in any one year. (Mar. 4, 1913, 37 Stat. 843; 16 U. S. C., sec. 558.)

1039. Arrests by employees of Forest Service for violations of laws and regulations.-All persons employed in the forest service and national park service of the United States shall have authority to make arrests for the violation of the laws and regulations relating to the forests and national parks, and any person so arrested shall be taken before the nearest United States commissioner, within whose jurisdiction the national forest or national park is located, for trial; and upon sworn information by any competent person any United States commissioner in the proper jurisdiction shall issue process for the arrest of any person charged with the violation of said laws and regulations; but nothing herein contained shall be construed as preventing the arrest by any officer of the United States, without process of any person taken in the act of violating said laws and regulations. (Mar. 3, 1905, 33 Stat. 873; 16 U. S. C., sec. 559.)

1040. Use of timber for telephone lines for fire protection.-That hereafter the Secretary of Agriculture, whenever he may deem it necessary for the protection of the national forests from fire, may permit the use of timber free of charge for the construction of telephone lines. (Mar. 4, 1913, 37 Stat. 843; 16 U. S. C., sec. 560.)

1041. Forest experiment station in California.-That in order to determine and demonstrate the best methods for the conservative management of forest and forest lands and the protection of timber and other forest products, the Secretary of Agriculture is authorized and directed (1) to establish and maintain, in cooperation with the State of California and with the surrounding States, a forest experiment station at such place or places as he may determine to be most suitable, and (2) to conduct, independently or in cooperation with other branches of the Federal Government, the States, universities, colleges, county, and municipal agencies, business organizations, and individuals, such silvicultural, dendrological, forest fire, economic, and other experiments and investigations as may be necessary. (Mar. 3, 1925), sec. 1, 43 Stat. 1109; 16 U. S. C., sec. 562.)

1042. Forest experiment station in Ohio and Mississippi Valleys.That the Secretary of Agriculture is authorized to establish and maintain a forest experiment station in the States of the Ohio Valley and central Mississippi Valley, at such a place or places as may be selected by him, and he is hereby authorized and directed to conduct

silvicultural, forest-fire, dendrological, and other experiments and investigations, independently or in cooperation with other branches of the Federal Government, and with States, universities, colleges, county and municipal agencies, associations, and individuals, to determine the best methods for the growing, management, and protection of timber crops on forest lands and farm wood lots. (July 3, 1926, sec. 44, Stat. 838, 16 U. S. C., sec. 562a.)

1042a. Same; annual appropriation authorized.—An appropriation of $30,000 for the fiscal year ending June 30, 1927, for the establishment of the station provided by this Act and such annual appropriations as may thereafter be necessary for its maintenance and operation are hereby authorized. (July 3, 1926, sec. 2, 44 Stat. 838; 16 U. S. C., sec. 562a.)

1043. Forest experiment station in Pennsylvania.-That in order to determine and demonstrate the best methods for the growing, management, and protection of timber crops on forest lands and farm wood lots, the Secretary of Agriculture is hereby authorized and directed to establish and maintain a forest experiment station at such place or places as may be determined as most suitable by him, in cooperation with the State of Pennsylvania and with the neighboring States, and to conduct such silviculture and other forest experiments and investigations as may be necessary, either independently or in cooperation with other organizations, institutions, or individuals, and that to carry out the purposes of this Act an appropriation in the amount of $30,000 is hereby authorized. (July 3, 1926, 44 Stat. 840; 16 U. S. C., sec. 562b.)

1044. Cooperation with States for protection from fire of forested watersheds of navigable streams.-That the sum of two hundred thousand dollars is hereby appropriated and made available until expended, out of any moneys in the National Treasury not otherwise appropriated, to enable the Secretary of Agriculture to cooperate with any State or group of States, when requested to do so, in the protection from fire of the forested watersheds of navigable streams; and the Secretary of Agriculture is hereby authorized, and on such conditions as he deems wise, to stipulate and agree with any State or group of States to cooperate in the organization and maintenance of a system of fire protection on any private or state forest lands within such State or States and situated upon the watershed of a navigable river: Provided, That no such stipulation or agreement shall be made with any State which has not provided by law for a system of forest-fire protection: Provided further, That in no case shall the amount expended in any State exceed in any fiscal year the amount appropriated by that State for the same purpose during the same fiscal year. (Mar. 1, 1911, sec. 2, 36 Stat. 961; 16 U. S. C., sec. 563.)

1045. Cooperation by Secretary of Agriculture with State officials as to recommendations of systems of forest fire prevention.-That the Secretary of Agriculture is hereby authorized and directed, in cooperation with appropriate officials of the various States or other suitable agencies, to recommend for each forest region of the United States such systems of forest-fire prevention and suppression as will adequately protect the timbered and cut-over lands therein with a view to the protection of forest and water resources and the continuous

production of timber on lands chiefly suitable therefor. (June 7, 1924, sec. 1, 43 Stat. 653; 16 U. S. C., sec. 564.)

1046. Cooperation by Secretary of Agriculture with State officials in protection of timbered and forest-producing lands; limitation on Federal expenditures. If the Secretary of Agriculture shall find that the system and practice of forest-fire prevention and suppression provided by any State substantially promotes the objects described in the foregoing section he is hereby authorized and directed, under such conditions as he may determine to be fair and equitable in each State, to cooperate with appropriate officials of each State, and through them with private and other agencies therein, in the protection of timbered and forest-producing lands from fire. In no case other than for preliminary investigation shall the amount expended by the Federal Government in any State during any fiscal year, under this section, exceed the amount expended by the State for the same purpose during the same fiscal year, including the expenditures of forest owners or operators which are required by State law or which are made in pursuance of the forest-protection system of the State under State supervision, and the Secretary of Agriculture is authorized to make expenditures on the certificate of the State forester, the State director of extension, or similar State official having charge of the cooperative work for the State that State and private expenditures as provided for in this Act have been made. In the cooperation extended to the several States due consideration shall be given to the protection of watersheds of navigable streams, but such cooperation may, in the discretion of the Secretary of Agriculture, be extended to any timbered or forest-producing lands or watersheds from which water is secured for domestic use or irrigation within the cooperative States. (June 7, 1924, sec. 2, 43 Stat. 653; Mar. 3, 1925, 43 Stat. 1127; Apr. 13, 1926, 44 Stat. 242; 16 U. S. C., sec. 565.)

1047. Cooperation by Secretary of Agriculture with Territories.-That the Secretary of Agriculture be, and he is hereby, authorized to cooperate with the Territories of the United States on the same terms and conditions as with States under sections 1 and 2 of the Act of Congress entitled "An Act to provide for the protection of forest lands, for the reforestation of denuded areas, for the extension of national forests, and for other purposes, in order to promote the continuous production of timber on lands chiefly suitable therefor," approved June 7, 1924. [16 U. S. C., secs. 564, 565]. (Feb. 20, 1931, 46 Stat. 1200, 16 U. S. C., sec. 565a.)

1048. Expenditure for study of effect of tax laws, etc., on forest perpetuation; appropriations.-That the Secretary of Agriculture shall expend such portions of the appropriations authorized herein as he deems advisable to study the effects of tax laws, methods, and practices upon forest perpetuation, to cooperate with appropriate officials of the various States or other suitable agencies in such investigations and in devising tax laws designed to encourage the conservation and growing of timber, and to investigate and promote practical methods of insuring standing timber on growing forests from losses by fire and other causes. There is hereby authorized to be appropriated annually, out of any money in the Treasury not otherwise appropriated, not more than $2,500,000, to enable the Secretary of Agriculture to carry out the provisions of sections 1, 2, and 3 of this Act [16

U. S. C., secs. 564-565]. (June 7, 1924, sec. 3, 43 Stat. 653, 16 U. S. C., sec. 566.)

1049. Cooperation by Secretary of Agriculture with States in procuring forest-tree seeds and plants; limitation on expenditure; appropriation.— That the Secretary of Agriculture is hereby authorized and directed to cooperate with the various States in the procurement, production, and distribution of forest-tree seeds and plants, for the purpose of establishing windbreaks, shelter belts, and farm wood lots upon denuded or nonforested lands within such cooperating States, under such conditions and requirements as he may prescribe to the end that forest-tree seeds or plants so procured, produced, or distributed shall be used effectively for planting denuded or nonforested lands in the cooperating States and growing timber thereon: Provided, That the amount expended by the Federal Government in cooperation with any State during any fiscal year for such purposes shall not exceed the amount expended by the State for the same purposes during the same fiscal year. There is hereby authorized to be appropriated annually, out of any money in the Treasury not otherwise appropriated, not more than $100,000, to enable the Secretary of Agriculture to carry out the provisions of this section. (June 7, 1924, sec. 4, 43 Stat. 654; 16 U. S. C., sec. 567.)

1050. Cooperation by Secretary of Agriculture with States in establishing wood lots; limitation on expenditure; appropriation.-That the Secretary of Agriculture is hereby authorized and directed in cooperation with appropriate officials of the various States or, in his discretion, with other suitable agencies, to assist the owners of farms in establishing, improving, and renewing wood lots, shelter belts, windbreaks, and other valuable forest growth, and in growing and renewing useful timber crops: Provided, That, except for preliminary investigations, the amount expended by the Federal Government under this section in cooperation with any State or other cooperating agency during any fiscal year shall not exceed the amount expended by the State or other cooperating agency for the same purpose during the same fiscal year. There is hereby authorized to be appropriated annually out of any money in the Treasury not otherwise appropriated, not more than $100,000 to enable the Secretary of Agriculture to carry out the provisions of this section. (June 7, 1924, sec. 5, 43 Stat. 654; 16 U. S. C., sec. 568.)

1051. Cooperation by Secretary of Agriculture with Territories and other possessions.-That the Secretary of Agriculture is hereby authorized to cooperate with Territories and other possessions of the United States on the same terms and conditions as with States under sections 3, 4, and 5 of the Act of Congress entitled "An Act to provide for the protection of forest lands, for the reforestation of denuded areas, for the extension of national forests, and for other purposes, in order to promote the continuous production of timber on lands chiefly suitable therefor ", approved June 7, 1924. U.S. C., secs. 566, 567, 568.] (Apr. 13, 1926, 44 Stat. 250; 16 U. S. C., sec. 568a.)

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1052. Donation to United States of lands for timber purposes.-That to enable owners of lands chiefly valuable for the growing of timber crops to donate or devise such lands to the United States in order to assure future timber supplies for the agricultural and other indus

tries of the State or for other national-forest purposes, the Secretary of Agriculture is hereby authorized, in his discretion, to accept on behalf of the United States title to any such land so donated or devised, subject to such reservations by the donor of the present stand of merchantable timber or of mineral or other rights for a period not exceeding twenty years as the Secretary of Agriculture may find to be reasonable and not detrimental to the purposes of this section, and to pay out of any moneys appropriated for the general expenses of the Forest Service the cost of recording deeds or other expenses incident to the examination and acceptance of title. Any lands to which title is so accepted shall be in units of such size or so located as to be capable of economical administration as national forests either separately or jointly with other lands acquired under this section, or jointly with an existing national forest. All lands to which title is accepted under this section shall, upon acceptance of title, become national-forest lands, subject to all laws applicable to lands acquired under the Act of March 1, 1911 (Thirty-sixth Statutes at Large, page 961), and amendments thereto. [16 U. S. C., secs. 480, 500, 513-519, 521, 552, 563.] In the sale of timber from national-forest lands acquired under this section preference shall be given to applicants who will furnish the products desired therefrom to meet the necessities of citizens of the United States engaged in agriculture in the States in which such national forest is situated: Provided, That all property, rights, easements, and benefits authorized by this section to be retained by or reserved to owners of lands donated or devised to the United States shall be subject to the tax laws of the States where such lands are located. (June 7, 1924, sec. 7, 43 Stat. 654; 16 U. S. C., sec. 569.)

1053. Ascertainment by Secretary of Agriculture of lands valuable for stream-flow protection and report. That the Secretary of Agriculture is hereby authorized to ascertain and determine the location of public lands chiefly valuable for stream-flow protection or for timber production, which can be economically administered as parts of national forests, and to report his findings to the National Forest Reservation Commission established under the Act of March 1, 1911 (Thirty-sixth Statutes at Large, page 961) [16 U. S. C., sec. 513], and if the commission shall determine that the administration of said lands by the Federal Government will protect the flow of streams used for navigation or for irrigation, or will promote a future timber supply, the President shall lay the findings of the commission before the Congress of the United States. (June 7, 1924, sec. 8, 43 Stat. 655, 16 U. S. C., sec. 570.)

1054. Buildings for national-forest purposes.-That, in addition to buildings costing not to exceed $1,500 each, the Secretary of Agriculture, out of any moneys appropriated for the improvement or protection of the national forests, may construct, improve, or purchase during each fiscal year three buildings for national-forest purposes at not to exceed $2,500 each, and three at not to exceed $2,000 each: Provided, That the cost of a water-supply or sanitary system shall not be charged as a part of the cost of any building except those costing in excess of $2,000 each, and no such water-supply and sanitary system shall cost in excess of $500. (Mar. 3, 1925, sec. 2, 43 Stat. 1132; 16 U. S. C., sec. 571.)