Section 4
SEC. 4. Section twenty-three of Act Numbered Thirty- one hundred and eight is hereby amended by adding at the end thereof the following proviso: "Provided, That either of the Public Utility Commissioners may summarily punish for contempt, by a fine not to exceed two hundred pesos or imprisonment not to exceed ten days, or both, any person guilty of misconduct in the presence of the Commission or Commissioner or so near them as to interrupt the hearing or sessions or any other proceedings of a Public Utility Commissioner, including refusal by any person present at a trial, session or investigation conducted by either of the Commissioners to be sworn as a witness or answer as such when legally requested to do so."