The county treasurer shall offer for sale, on the day of the sale, each parcel separately for the total amount due against each parcel advertised for sale. [C51, §499; R60, §765; C73, §875; C97, §1422; C24, 27, 31, 35, 39, § 7252; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §446.15 ] 91 Acts, ch 191, §67 ; 95 Acts, ch 57, §16