its Secretary, upon the ground that the testimony or evidence,
books, papers, or documents required of him may tend to in-
criminate him or subject him to penalty or forfeiture; but no
person shall be prosecuted, punished or subjected to any pen-
alty or forfeiture or on account of any act, transaction, mat-
ter or thing concerning which he shall, under oath, have, by
order of the Commission or a Commissioner or its inspector
or examiner, testified to or produced documentary evidence
of; provided, however, that no person so testifying shall be
exempt from prosecution or punishment for any perjury com-
mitted by him in his testimony.

SEC. 8. Each officer who serves such subpoena shall receive
the same fee as the Sheriff would receive in the county or
city where said witness is subpoenaed, and each witness who
appears in obedience to a subpoena, before the Commission or
an inspector or an examiner, shall receive for his attendance
the fees and mileage provided for witnesses in civil cases in
the Circuit Courts of the counties or the Common Law Courts
of Baltimore City, as of the place where he gives his testi-
mony, which shall be audited and paid from the State Treas-
ury in the same manner as other vouchers approved by any
member of the Commission and the Secretary. No witness
subpoenaed at the instance of a party other than the Commis-
sion, or an inspector or examiner, shall be entitled to com-
pensation from the State Treasury unless the Commission
shall certify that his testimony was material to the matter in-
vestigated. In an investigation, the Commission may cause
depositions of witnesses residing within or without the State
to be taken in the manner prescribed by law for like deposi-
tions taken in cases pending before the Circuit Courts of the
counties or the Common Law Courts of Baltimore City, as
is now or hereafter may be provided by law.

SEC. 9. Subject to the provisions of this Act, the State In-
dustrial Accident Commission shall adopt reasonable and
proper rules to govern its procedure, which procedure shall
be as summary and simple as reasonably may be. It shall
regulate and provide for the kind and character of notices,
and the services thereof, and in cases of injury by accident to
employees, the nature and extent of the proofs and evidence
and the method of taking and furnishing the same for the es-
tablishment of the right to compensation. It shall determine
the nature and forms of application of those claiming to be
entitled, to benefits or compensation, and. shall regulate the