1. =Relation to the Community.= The Sunday school is a temple built of living stones; and the quarry from which they are taken in the rough, to be cut and polished for their places in the building, is the entire community in which the school is placed. In our time, more than ever before, the reasons are imperative why special study should be given to the community from which the school must draw its members. Certain principles of administration will become apparent when once the field is carefully considered. (1) _Constituency Adjacent._ The population from which a given Sunday school draws its members must be generally that immediately around it. Some teachers and scholars may come from a distance, but even in this age of convenient transit by trains and trolley cars, it is found that, taking the church building as a center, the constituency of the Sunday school in a city is mostly within a radius of half a mile, and in the country within a mile. Throughout that sphere of influence the church should look well to the population, should know its proportionate elements, as far as possible should come into acquaintance with the families, and should plan to win, to evangelize, and to hold all its natural following. (2) _Membership Representative._ Upon general and almost invariable principles, the Sunday school should represent all the elements of the population within its environment. If it be a residence section with isolated houses, each containing but one family of well-to-do people, the church is apt to be a family church, and a large Sunday school must not be looked for, since large mansions rarely contain large families. If, on the other hand, the neighborhood be populous, characterized by varied strata of society--a few rich, a goodly number fairly prosperous, and a greater mass of wage-earners, yet the section as a whole American and not foreign in its civilization--then a flourishing, active, and growing Sunday school should be expected. And it should embrace all these elements, the rich, the middle class, and the wage-earners, in the proportion which each bears to the community as a whole. If the school in such a population be small, or if it be composed exclusively of one class, whether it be the so-called better class or the mission class, there is a serious error in its policy. The true Sunday school should be representative of all the elements in the population. It is both a crime and a blunder to limit the efforts of a Sunday school to one class of society: a crime, because such a school leaves multitudes around it to perish; and a blunder, because the effort results in an anæmic, dwindling, dying institution.