(2) The other mode of learning any book in the thorough manner I have indicated, whether it be a book in which the reader finds but _few_ novel ideas or where they are _all new_, as in a scientific or technical work, is by my Method. In fact, I believe no one can learn any book so thoroughly by _rote_, even if he possesses a marvellous Natural Memory and if he peruse it ever so many times, as my Pupils can by my method in a single perusal. Let the reader note that my System has two important aspects--(1) It is a Device or Method of memorising or learning any facts whatever--prose, poetry, dates, data, formulæ and facts and principles of the sciences, &c., &c., &c., or anything whatsoever to be remembered. (2) There is another equally, if not _more_ important aspect of it, namely, as a _Trainer or Strengthener of the Natural Memory_ to any extent the pupil wishes to carry it. And the Natural Memory is so strengthened by the use of the System, that as a Device, the System is no longer required. You then remember from your new Memory-power without taking any pains to remember, and I am happy to add that the diligent student can derive the full benefit of the System as a Memory Trainer by learning the lessons in the way I point out. Now, those who have thus derived the _full benefit_ of the System, both as a Device for memorising and also as a Memory Trainer, _are the persons who can learn a book in one reading_. "Reading" is used by Coaches in a technical sense; that is, synonymous with "thorough study." By a "single" or "one reading," I mean a single careful perusal _in conformity to the requirements of my System_. I do not mean that they can do this and doze during the process. I now reproduce most of the plan always adopted in dealing with books whose contents, or the unfamiliar portions of them are to be mastered. (1) You will not read the book with the _rapidity_ with which some young ladies are said to devour the latest novel. They are often suspected of skipping pages at a time in order to discover the different stages of a plot, until a thoroughly aroused curiosity compels them to hasten at once to the last chapter to fall upon the denouement. This is not the style of perusal I contemplate.