Funds not disbursed as provided in section 37.22 may be invested by said commission in such securities as are authorized by section 636.23 . [C31, 35, §502-c3; C39, § 502.4; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §37.24 ] Referred to in §37.26