Next in dignity to the Dean were the four Archdeacons of London, Essex, Middlesex, and Colchester, the Archdeacon of St. Albans being added in the reign of Henry VIII. The Treasurer had charge of all the goods of the church, such as vestments, service-books, altar furniture, &c. He was assisted by the Sacrist as his deputy, and under the Sacrist, by three vergers. The Precentor, with the assistance of his deputy, the Succentor, directed the music of the cathedral. The Chancellor was the person from whom the schoolmasters of the Metropolis received their licence to teach; among many other duties, he composed the letters and deeds of the Chapter, and had committed to him the punishment of clerks of the lower grade. The Canons or Prebendaries were thirty in number, and, with the Bishop at their head, constituted the Chapter. They elected both Bishop and Dean, and each had an endowment attached to his stall. The names of the manors forming these endowments still appear above the Prebendaries' stalls. One of the stalls still bears the name of Consumpta per Mare; the estate was in Walton-on-the-Naze, and the inundation which the name commemorates seems to have occurred about the time of the Conquest. It was the duty of each Canon, whether in church or absent, to recite daily a portion of the psalter. The first words of the section to be recited by each still stand, as they stood of old, over the stall of each of the Prebendaries. As there are thirty Prebendaries, and a hundred and fifty psalms, the portion which each was bound to repeat was about five psalms. Dean Donne, who was Prebendary of Chiswick early in the seventeenth century, wrote: "Every day God receives from us, however we be divided from one another in place, the sacrifice of praise in the whole Booke of Psalmes. And though we may be absent from this Quire, yet wheresoever dispersed, we make up a Quire in this Service of saying over all the Psalms every day." Of these thirty Canons, a varying number residing on the spot, and taking their part in the daily offices, were called Residentiaries. Besides a constant attendance during all the canonical hours, each Residentiary was expected to show large and costly hospitality, and this practice survived in part so late as the year 1843. Some Canons preferred to live upon their own estates, others held their stalls as one of many pluralities, for they were sometimes bestowed upon bishops, dignitaries, foreigners, and even upon children. Many of them being consequently non-resident, each Canon had a substitute called his Vicar. The vicars took rank after the chaplains, who in their turn were inferior to the minor canons. These corresponded with the Vicars Choral of the present day.