Section 1. Be it enacted, &c., That the Governor, the Auditor General, and the State Treasurer on behalf of the Commonwealth are hereby authorized, from time to time, prior to the thirty-first day of May, one thousand nine hundred thirty-seven, to borrow on the credit of the Commonwealth of Pennsylvania, such sum or sums of money, not to exceed one million dollars ($1,000,000), as may be necessary to meet casual deficiencies of revenue during the biennial fiscal period ending the thirty-first day of May, one thousand nine hundred thirty-seven.