Out of such sums each State shall be entitled to receive annually a sum of money equal to and subject to the same requirement as to use for marketing research projects as the sums received from Federal appropriations for State agricultural experiment stations for the fiscal year 1955, except that amounts heretofore made available from the fund known as the “Regional research fund, Office of Experiment Stations” shall continue to be available for the support of cooperative regional projects as defined in subsection (c)(3), and the said fund shall be designated “Regional research fund, State agricultural experiment stations,” and the Secretary of Agriculture shall be entitled to receive annually for the administration of sections 361a to 361i of this title, a sum not less than that available for this purpose for the fiscal year ending June 30, 1955: Provided, That if the appropriations hereunder available for distribution in any fiscal year are less than those for the fiscal year 1955 the allotment to each State and the amounts for Federal administration and the regional research fund shall be reduced in proportion to the amount of such reduction.

There is authorized to be appropriated for the fiscal year ending June 30, 1973, and for each fiscal year thereafter, for payment to the Virgin Islands and Guam, $100,000 each, which sums shall be in addition to the sums appropriated for the several States of the United States and Puerto Rico under the provisions of this section. The amount paid by the Federal Government to the Virgin Islands and Guam pursuant to this paragraph shall not exceed during any fiscal year, except the fiscal years ending June 30, 1971, and June 30, 1972, when such amount may be used to pay the total cost of providing services pursuant to sections 361a to 361i of this title, the amount available and budgeted for expenditure by the Virgin Islands and Guam for the purposes of such sections.

Twenty per centum shall be allotted equally to each State;

Not less than 52 per centum of such sums shall be allotted to each State, as follows: One-half in an amount which bears the same ratio to the total amount to be allotted as the rural population of the State bears to the total rural population of all the States as determined by the last preceding decennial census current at the time each such additional sum is first appropriated; and one-half in an amount which bears the same ratio to the total amount to be allotted as the farm population of the State bears to the total farm population of all the States as determined by the last preceding decennial census current at the time such additional sum is first appropriated;

Not less than 25 percent shall be allotted to the States for cooperative research employing multidisciplinary approaches in which a State agricultural experiment station, working with another State agricultural experiment station, the Agricultural Research Service, or a college or university, cooperates to solve problems that concern more than 1 State. The funds available under this paragraph, together with the funds available under subsection (b) for a similar purpose, shall be designated as the “Multistate Research Fund, State Agricultural Experiment Stations”.

Three per centum shall be available to the Secretary of Agriculture for administration of sections 361a to 361i of this title. These administrative funds may be used for transportation of scientists who are not officers or employees of the United States to research meetings convened for the purpose of assessing research opportunities or research planning.