Each prison is in charge of a Governor who is in daily communication with the office in Edinburgh. He visits the prisoners once daily and hears any complaints by them or regarding them. He has the power to impose certain punishments for offences against discipline, but if they involve a decrease of diet they must be confirmed by the Medical Officer, who may refuse to allow them on medical grounds. He is responsible for the carrying out of the rules and his discretionary power is very small. No qualification has been laid down for the position, and this leaves the Secretary of State free to appoint anybody whom he considers most likely to perform the duties satisfactorily, and prevents the post becoming a preserve for the members of any profession. In Scotland military men have been appointed, and members of the clerical staff and warders have been promoted to governorships, but no professional man has ever been placed in such an important position. When the Governor is absent or on leave his place is taken by the head warder, who performs the duties of this important office in addition to his own. Where there are a sufficient number of female prisoners there is a Matron in charge of them, who visits them in the same way as the Governor does the males and discharges similar duties towards them. The Prison Chaplain must be an ordained minister, and in the larger prisons he holds services weekly and conducts prayers daily. He visits the prisoners in their cells and administers spiritual consolation and advice; and he does what he can to help them on their liberation. Prisoners who are Roman Catholics and those who are Episcopalians are visited by clergymen of those Churches in a similar way.