§ 6. Swearing witnesses. Whenever the common council of a city shall
have appointed a committee of members of their body upon any subject or
matter within the jurisdiction of such common council, or to examine any
officer of the city, in relation to the discharge of his official
duties, or to the receipt or disbursement by him of any moneys in the
discharge of such duties, or concerning the possession or disposition by
him, in his official capacity, of any property belonging to the city; or
to use, inspect or examine any book, account, voucher or document, in
his possession or under his control as such officer, relating to the
affairs or interests of such city, the chairman of such committee is
authorized to administer oaths to all such witnesses as may appear or be
brought before such committee.