The legislative authority of a municipal corporation which, for any reason, is inaccessible from the mainland at some time of the year, may provide for the maintenance of a physician when, in the opinion of a majority of the members of the legislative authority, it is necessary for the preservation of the public health and welfare.

An additional tax may be levied upon all the taxable property in the municipal corporation, in such amount as the legislative authority determines, to provide for such maintenance. The question of levying such tax, and the amount thereof, shall be separately submitted to the qualified electors of the municipal corporation at a general or special election. Twenty days’ notice thereof shall be previously given by posting in at least three public places in the municipal corporation. Such notice shall state specifically the amount to be raised and the purpose thereof. If a majority of all votes cast at such election upon the proposition are in favor thereof, the tax provided for shall be authorized.

Upon authorization of the tax levy as provided by this section, the legislative authority may issue notes in anticipation of such revenues, to mature in not more than two years from the date of issue, and to bear interest at not more than four per cent per annum.