Subpoena, failure to comply, penalty, fees; circuit court summoning witnesses; perjury. Any person who shall be served with a subpoena to appear and testify, or to produce books and papers issued by the commission or by any commissioner, or by any authorized representative of the commission, in the course of the investigation conducted under the provisions of this chapter, and who shall refuse or neglect to appear or to testify as commanded in such subpoena, shall be guilty of a misdemeanor, and shall, on conviction, be punished as herein provided. The fees of witnesses for attendance and travel shall be the same as the fees of witnesses in the circuit court for the county, and shall be paid from the appropriation for the expenses of the commission. The judge of the circuit court, either in term or vacation, upon application of any such commissioner, shall compel the attendance of witnesses, the production of books and papers and giving of testimony before the commission or before any commissioner, or authorized representative, by attachment for contempt or otherwise in the same manner as the production of evidence may be compelled before said court. Every person who, having taken an oath or made affirmation in such proceeding, shall swear or affirm wilfully, corruptly, or falsely, shall upon conviction be deemed guilty of a misdemeanor.