In a recent article on the Sunday School, Professor John S. Hart thus sets forth what it is and is not, and the methods which ought to be pursued in its instructions: It is not a church, not a prayer-meeting, not a religious sociable, but a school, and its main business is teaching—teaching with reference, indeed, to a particular end, but none the less teaching. Its methods, therefore, should be governed by the same general principles as those employed in other schools. There should be intelligent classifications of the scholars, not according to years or size, but according to intellectual development—classification of the school itself into primary, intermediate and higher departments. There should be object-teaching for the very young, memoriter exercises, blackboard exercises—not acrostic gymnastics, but explanations addressed to the eye, as the most certain method of reaching the understanding and the memory. There should be lessons to be learned at home; there should be study, not mere talk; there should be recitation, old-fashioned question and answer, not mere hortatory harangue; there should be a systematic course of study, not mere patch-work.