Expense and compensation.

All necessary expenses incurred by such landscape architect, engineer, or gardener, under the provisions of section 461A.16 , shall be paid in the same manner as are other expenditures by the commission, but no compensation shall be paid for such services. [C24, 27, 31, 35, 39, § 1811; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §111.17 ] C93, §461A.17