When a peremptory mandamus is directed to a public officer, body, or board, commanding the performance of any public duty specially enjoined by law, if it shall appear to the court that such officer, or any member of such body or board, without just excuse, has refused or neglected to perform the duty so enjoined, it may impose a fine of not more than $250, which fine, when collected, shall be paid into the state treasury; and the payment thereof shall be a bar to an action for any penalty incurred by such officer or member, by reason of the refusal or neglect.