I have just one other point that I would refer to before closing my letter, as it has been rather a vexed question in certain places--I allude to what has been termed "the responsibility of the preaching." How many of our friends have been and are harassed about this question! And why? I am persuaded that it is from not understanding the true nature, character, and sphere of the work of evangelization. Hence we have had some persons contending for it that the Sunday evening preaching should be left open. "Open to what?" That is the question. In too many cases it has proved to be "open" to a character of speaking altogether unsuited to many who had come there, or who had been brought by friends, expecting to hear a full, clear, earnest gospel. On such occasions our friends have been disappointed, and the unconverted perfectly unable to understand the meaning of the service. Surely such things ought not to be; nor would they be if men would only discern the simplest thing possible, namely, the distinction between all meetings in which Christ's servants exercise their ministry on their own personal responsibility, and all meetings which are purely reunions of the assembly, whether for the Lord's Supper, for prayer, or for any other purpose whatsoever. Your deeply affectionate, * * * LETTER VII. Through want of space I was obliged to close my last letter without even touching upon the subject of the Sunday-school: I must, however, devote a page or two to a branch of work which has occupied a very large place in my heart for thirty years. I should deem my series incomplete were this subject left untouched. Some may question how far the Sunday-school can be viewed as an integral part of the work of evangelization. I can only say it is mainly in this light I regard it. I look upon it as one great and most interesting branch of gospel work. The superintendent of the Sunday-school and the teacher of the Sunday-school class are workers in the wide gospel field, just as distinctly as the evangelist or preacher of the gospel. I am fully aware that a Sunday-school differs materially from an ordinary gospel preaching. It is not convened in the same way, or conducted in the same manner. There is, if I may so express myself, a union of the parent, the teacher, and the evangelist, in the person of the Sunday-school worker. For the time being he takes the place of the parent: he seeks to do the duty of a teacher; but he aims at the object of the evangelist--that priceless object, the salvation of the souls of the precious little ones committed to his charge. As to the mode in which he gains his end--as to the details of his work--as to the varied agencies which he may bring to bear, he alone is responsible.