Notwithstanding any requirements of the foregoing sections of this article, the commissioner shall, prior to whichever is the later of (1) thirty days after the close of this session of the Legislature and (2) July 1, 1939, authorize and direct the secretary of the treasury of the United States to transfer from this state's account in the unemployment trust fund, established and maintained pursuant to section nine hundred four of the Social Security Act, as amended, to the railroad unemployment insurance account, established and maintained pursuant to section ten of the Railroad Unemployment Insurance Act, an amount hereinafter referred to as the preliminary amount; and shall, prior to whichever is the later of (1) thirty days after the close of this session of the Legislature and (2) January 1, 1940, authorize and direct the secretary of the treasury of the United States to transfer from this state's account in said unemployment trust fund to said railroad unemployment insurance account, an additional amount, hereinafter referred to as the liquidating amount. The preliminary amount shall consist of that proportion of the balance in the unemployment compensation fund as of June 30, 1939, as the total amount of contributions collected from "employers" (as the term "employer" is defined in section one-a of the Railroad Unemployment Insurance Act) and credited to the unemployment compensation fund bears to all contributions theretofore collected under this chapter and credited to the unemployment compensation fund. The liquidating amount shall consist of the total amount of contributions collected from "employers" (as the term "employer" is defined in section one-a of the Railroad Unemployment Insurance Act) pursuant to the provisions of this chapter during the period July 1, 1939 to December 31,1939, inclusive.