to the children, as well as to their parents and teachers, prevented us from stating to them, that this was the principle by which we had been regulated in our selection. From these twenty-two children, Mr Gall has made up his class of ten, for this experiment, which he proposes shall continue for eight days, occupying two hours each day; and having thus chosen that class of pupils which appeared to us the most ignorant, we have, in justice to Mr Gall and this system of teaching, stated the fact, leaving the examinators to make what allowance they may on this account think proper, in determining on the failure or success of this very important and interesting experiment." This was the state of the children's knowledge and capacity when the experiment began; and the following was found to be the state of these same children's knowledge when examined publicly in the East Church, before the Very Rev. Principal, Professors, and Clergymen of the city, and a large congregation of the citizens, eight days afterwards. The children were first interrogated minutely on the doctrines of the gospel, which had been previously arranged in a list under sixteen different heads, embodying all the leading doctrinal points in the Confession of Faith and Shorter Catechism, a copy of which was handed to the Very Rev. Principal Jack, who presided. The Report of the Experiment, prepared by their Committee, goes on to say, that "After being examined generally and satisfactorily on each of these heads, the chairman, by means of a list of the names with which he was furnished, called up some of them individually, who were carefully examined, and shewed, by their answers, that they severally understood the nature of the above doctrines, and their mutual relation to each other. "They were then examined on the Old Testament History, from the account of the death of Moses, downwards, to that of the revolt of the Ten Tribes in the reign of Rehoboam. Here they distinctly stated and described all the leading circumstances of the narrative comprised in the 'First Step,' whose brief but comprehensive outline they appeared, in various instances, to have filled up at home, by reading in their Bibles the corresponding chapters. They were next examined in the same way, on several sections of the New Testament," with which they had also acquired an extensive practical knowledge, besides some useful information in Civil History, Biography, and Natural Philosophy, on all which they were closely and extensively examined. In another experiment, undertaken at the request, and under the sanction, of the Sunday School Union of London, the efficiency of this exercise, as a successful imitation of Nature in communicating knowledge, was also satisfactorily ascertained. We shall at present advert only to one feature of it, as being more immediately connected with the present branch of our subject, that of communicating knowledge to the most ignorant and depraved.