In long selections, the saving by this method is considerable. A pupil is not likely to believe this because if he spends a few minutes learning in this manner, he finds that he cannot repeat a single line, while if he had concentrated on one line, he could have repeated at least that much. This is true; but although he cannot repeat a single line by the whole procedure, he has learned nevertheless. It would be a good thing to demonstrate this fact to a class; then the pupils would be satisfied to use the most economical procedure. The plan holds good whether the matter be prose or poetry. But experiments have been carried on only with verbatim learning. The best procedure for learning the facts so that one can give them in one's own words has not yet been experimentally determined. =Cramming.= An important practical question is whether it pays to go over a great amount of material in a very short time, as students often do before examinations. From all that has been said above, one could infer the solution to this problem. Learning and memorizing are to some extent a growth, and consequently involve time. There is an important law of learning and memory known as Jost's law, which may be stated as follows: If we repeat or renew associations, the repetitions have most value for the old associations. Therefore when we learn, we should learn and then later relearn. This will make for permanent retention. Of course, if we wish to get together a great mass of facts for a temporary purpose and do not care to retain them permanently, cramming is the proper method. If we are required to pass an examination in which a knowledge of many details is expected and these details have no important permanent value, cramming is justified. When a lawyer is preparing a case to present to a court, the actual, detail evidence is of no permanent value, and cramming is justified. But if we wish to acquire and organize facts for their permanent value, cramming is not the proper procedure. The proper procedure is for a student to go over his work faithfully as the term of school proceeds, then occasionally review. At the end of the term, a rapid review of the whole term's work is valuable. After one has studied over matter and once carefully worked it out, a quick view again of the whole subject is most valuable, and assists greatly in making the acquisition permanent. But if the matter has not been worked out before, the hasty view of the material of the course, while it may enable one to pass the examination, has no permanent value.