to official visitors of jails, penitentiaries, and penal or reformatory
institutions, under the common statute laws, are hereby confirmed:
Provided, however, That no such official visitor shall have the right
or power to give or deliver to any prisoner or inmate of any such
jail, penitentiary, or penal or reformatory institution, during such
visit, any chattel or object whatsoever, except objects and articles of
religious or moral instruction or use.