14. An incumbent cannot hold more than one benefice at the same time, except that upon a certificate of the bishop as to the facts, and with a licence or dispensation from the archbishop of the province (from the refusal of which there is an appeal to the King in Council), he may hold a second, the church of which is within four miles of that of the first by the nearest road, if the annual value of one of the benefices does not exceed the net sum of £200, after deducting rates, taxes, tenths, dues, and permanent charges, but not the stipend of a curate. But where the population of one of the parishes is over 3000, the joint holding will only be lawful if that of the other is under 500.[82] 15. The bishop is invested with certain specific powers in case of the inadequate performance of the ecclesiastical duties of a benefice, including not only the regular and due performance of Divine service on Sundays and holy days at the usual hours, but also all such duties as the incumbent is bound by law to perform, or the performance of which was solemnly promised by him at his ordination,[83] and the performance of which has been required of him in writing by the bishop; and including also, in the four Welsh dioceses and the county of Monmouth, such ministrations in Welsh as the bishop directs to be performed by him, not being more than one service in Welsh on every Sunday in any church, and without interfering with due provision for the English-speaking portion of the people. If the bishop has reason to believe that these duties are inadequately performed by an incumbent, he may issue a commission of inquiry to four commissioners, viz. the archdeacon or rural dean of the archdeaconry or deanery in which the benefice is situate; the canon residentiary, prebendary, or honorary canon of the cathedral church of the diocese elected triennially for the purpose by the dean and chapter; the beneficed clergyman elected triennially for the purpose by and out of the beneficed clergy of the archdeaconry; and a lay justice of the peace of the county nominated on the requisition of the bishop by the chairman of quarter sessions or lord-lieutenant of the county; and the incumbent may, if he desires, add a beneficed clergyman of the diocese or a justice of the peace as a fifth commissioner. If the commissioners or a majority of them report that the duties are inadequately performed, the procedure may be different, according as they do or do not add that this is due to the negligence of the incumbent. If they do not report negligence, the bishop has only power to require the incumbent to nominate one or more curates to perform or assist in performing the duties, and to make the appointment himself if the incumbent fails to do so, subject to an appeal to the archbishop.[84] But if they report negligence, the bishop may make the appointment without previously requiring the incumbent to nominate, and may inhibit the incumbent from performing all or any of