491.57  Sinking fund and loaning thereof.
  For the purpose of repairs, rebuilding, enlarging, or to meet contingencies, or for the purpose of creating a sinking fund, the corporation may set apart a sum which it may loan, and take proper securities therefor.
[C51, §699; R60, §1176; C73, §1081; C97, §1630; C24, 27, 31, 35, 39, §8393; C46, 50, 54, 58, 62, 66, 71, 73, 75, 77, 79, 81, §491.57]