Shall a law (Chapter 454 of the Acts pf 1923), which provides for the raising of funds toward the cost of the construction and maintenance of highways by means of an excise tax of two cents on each gallon of gasoline and other fuel used for propelling motor vehicles on the highways of the Commonwealth, said tax to be paid by the purchaser to the distributor, who, in turn, pays it to the Commonwealth, and the money to be credited to a fund to be known as the gasoline-highway fund, out of which, reimbursement is to be made to purchasers, who shall consume the gasoline or other fuel in any manner except in the operation of motor vehicles on the highways, and the expenses of carrying out the act are to be paid, fifty per cent of the balance of said fund to be distributed to the cities and towns of the Commonwealth in proportion to the amounts which they contribute to the State tax, and this fifty percent to the expended in construction or improvement of public ways within the city or town limits, and the other fifty per cent to expended by the State Department of Public Works on such highways as it may select, which law was approved by both branches of the General Court by votes not recorded, and approved by His Excellency the Governor, be approved?