All twelve foot streets and alleys running from north to south and extending through the city cemetery grounds in Section 29 and Fractional Section 30 in Township 11 North, Range 9 West of the Sixth P.M., known as the "Old Cemetery," shall be vacated as driveways. Such streets and alleys, so vacated, shall hereafter be known as "A" lots, and shall be designated by the number of the lot lying east thereof, with the addition of the letter "A", thus, lot number "1A", and so on, and for pricing purposes shall be considered as half lots in size.