Note D, p. 60.--The fact, that children who learn to repeat words without understanding them, do sometimes acquire the meaning of them afterwards, is no valid objection to the accuracy of this statement. Repeated experiments, in various forms, and with different persons, have established the important fact, that when children at any future period master the ideas contained in the words which they had previously committed to memory, it is not _because_ of that exercise, but _in spite of it_. They have attained them by another, and a perfectly different process. It is generally by reading the words from the memory,--thinking them over,--and in that way searching for, and reiterating the ideas they contain. This is much more difficult than when the person reads for the first time the same words from a book; and it has this serious disadvantage, that it has to be read from the memory _every time_ the ideas are required, which is not the case when the ideas are reiterated in the natural way by hearing, or by reading.--On this subject see the Experiment made before the Clergy and Teachers of Stirling, in July 1833, with "Blind Alick" of that place, who could repeat the whole Bible;--and the Supplementary Experiment to ascertain the same principle, made in the House of Correction in Belfast, before the Teachers and Clergymen of that town, in December 1837. Note E, p. 83.--Perhaps it may be found, that "Grouping," and "Classification," are only different manifestations of the same principle. But even if it were so, it would have been necessary here to treat of them separately, on account of the very different uses made of them by Nature. The present, be it observed, is not a metaphysical treatise, but a humble attempt to be popularly useful.--See Note C. Note F, p. 105.--This principle may by some be considered as "instinct," and others may affirm that it is "reason." All that we require to do here is to point out the phenomenon,--not to define it. The name is of little consequence. It is the principle itself, as perceived in its manifestations, that we have to do with, for the purpose of successfully imitating it in our dealings with the young. Note G, p. 132.--There needs scarcely any farther proof of this than the fact, that barristers, by constant practice, are usually the most fluent extemporaneous speakers. It is also strongly corroborative of the statement in the text, that clergymen generally, and especially those who are most accustomed to the use of extemporaneous prayers and sermons, find most ease in replying to an opponent on any subject that is familiar to them. Note H, p. 160, & 201.--It is a very remarkable fact, to which the attention of the writer was lately called, that Mrs Wesley, the mother of the Rev. John Wesley, founder of the Wesleyan Methodists, appears to have acted upon the principles here developed. In Southey's Life of that great man, there occurs the following Note: