(4) There will be a treasurer, to care for the funds, and to disburse them as ordered by the board of teachers, or the Sunday school as a whole. (5) Lastly, but most important of all, there must be the working force of instructors, the faculty of the institution, its teachers, who should be carefully chosen. The pastor, as well as the superintendent, should have an active voice in their call, since they are his coworkers in the religious instruction of the congregation. 6. =Membership.= In the conception of a Sunday school, both ideal and practical, the constituency for which it is established must be considered. As has been noted, it was originally for children only, and only for children who were destitute of home training, and outside of church relationship. The earliest Sunday schools were what are called in England ragged schools, and in America mission schools. But in the noble evolution of the movement the Sunday school constituency has been vastly enlarged; and now it is recognized that the Sunday school is for all ages and all classes. It should embrace the young and old, the ignorant and intelligent, the poor and rich, the sinner as well as the saint. The Sunday school which fulfills its mission to society will welcome all the world. FOOTNOTES: [2] Bishop John H. Vincent. [3] For qualifications and functions of the teacher see Chapters XIII and XIV. III THE NECESSITY AND ESSENTIALS OF A GRADED SUNDAY SCHOOL 1. =The Necessity of Grading.= As the result of the gradual and unguided evolution of the Sunday school through a century or longer, most schools are now divided in a vague way into certain departments, generally known as the Primary, or Infant Class; the Youths Department, or Boys and Girls; and the Adult Department, or Bible Classes. Many who have charge of schools such as these regard them as graded, and so report them. But the mere naming of departments does not constitute a graded school. Whoever studies the ungraded or loosely graded Sunday school will perceive in it certain evils which can be removed only by a thorough system of grading, maintained faithfully through a series of years. Some of these conditions which make the graded Sunday school an absolute necessity are the following: