Diocesan Convention.--The annual gathering of the Bishop, Clergy and people of a Diocese. The Bishop and Clergy represent their own Order and the people are represented by delegates elected by the Vestries of the various parishes. The purpose of the Convention is to review the work of the past year; make provision for the work of the year following, and by legislative acts provide such laws as may further the purpose for which the Diocese exists. For cause special conventions may be called, a month's notice at least being given to the clergy, and to the parishes within the Diocese. (See CONVENTION.) Diocesan Missions.--Church work done in a Diocese outside of its Parishes and having for its object the extension of the Church within the territorial limits of the Diocese, is called _Diocesan Missions_. This work is prompted by those words of our Lord {83} when He said, "Let us go into the next towns that I may preach there also; for therefore came I forth." The Diocese embraces all the people within its limits and for them all it has a message and a blessing. For the deliverance of this message and the bestowal of this blessing all, both Clergy and Laity, have responsibilities and therefore the Church turns to them for the means whereby this work can be carried on. The support of Diocesan Missions is as obligatory on all members of the Church as the support of the Bishop or their own Parish, and to this all will contribute annually if they love the Lord Jesus in sincerity and truth. (See CONVOCATION.) Diptychs.--In the early ages of the Church it was customary to recite in holy commemoration the names of eminent Bishops, of Saints and Martyrs; the names of those who had lived righteously and had attained the perfection of a virtuous life. For this purpose the Church possessed certain books, called _diptychs_, from their being _folded together_, and in which the names of such persons "departed in the true faith," were written that the Deacon might rehearse them at the time when the memorial of the departed was made at the celebration of the Holy Eucharist. This was done to excite and lead the living to the same happy state by following their good example; and also to celebrate the memory of them as still living, according to the principles of our Religion, and not properly dead, but only translated by death to a more Divine Life. To this custom is to be traced the origin of the Christian CALENDAR (which see). In many parishes at the present time a similar {84} custom obtains, of reciting at the Holy Communion on All Saints' Day the names of parishioners who, during the year, have departed in the true faith of God's Holy Name.