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the idea of calling up thought by a mere direct volition. Our chief power, therefore, in quickening and strengthening the memory, will be found to consist in our skill in applying and modifying the various principles or laws of association. And this brings us to an explanation of what is called INTENTIONAL MEMORY or RECOLLECTION.

161. Nature of intentional recollection.

Whenever we put forth an exercise of intentional memory, or inake a formal attempt to remember some circumstance, it is evident that the event in general, of which the circumstance, when recalled, will be found to be a part, must have previously been an object of attention. That is, we remember the great outlines of some story, but cannot in the first instance give a complete account of it, which we wish to do. We make an effort to recall the circumstances not remembered in two ways.We may, in the first place, form different suppositions, and see which agrees best with the general outlines; the general features or outlines of the subject being detained before us, with a considerable degree of permanency, by means of some feeling of desire or interest. This method of restoring thoughts is rather an inference of reasoning than a genuine exercise of memory.

We may, in the second place, merely delay upon those thoughts which we already hold possession of, and revolve them in our minds; until, aided by some principle of association, we are able to lay hold of the particular ideas for which we were searching. Thus, when we endeavour to recite what we had previously committed to memory, but are at a loss for a particular passage, we repeat a number of times the concluding words of the preceding sentence. In this way, the sentence which was forgotten is very frequently recalled.

162. Instance illustrative of the preceding statements.

The subject of the preceding section will perhaps be more distinctly understood, in connexion with the following illustration. Dr. Beattie informs us, that he was him self acquainted with a clergyman, who, on being attacked with a fit of apoplexy, was found to have forgotten

all the transactions of the four years immediately preceding the attack. And yet he remembered as well as ever what had happened before that period. The newspapers which were printed during the period mentioned were read with interest, and afforded him a great deal or amusement, being entirely new to him. It is further. stated, that this individual recovered by degrees all he had lost; so as, after a while, to have nearly or quite as full a remembrance of that period as others. In this instance the power of the principles of association appears to have been at first completely prostrated by the disease, without any prospect of their being again brought into action, except by some assistance afforded them. This assistance, no doubt, was conversation, the renewed notice of various external objects addressed to the senses, and reading. By reading old newspapers, and by conversation in particular, he occasionally fell upon ideas which he had not only been possessed of before, but which had been associated with other ideas, forming originally distinct and condensed trains of thought. And thus whole series were restored.-Other series again were recovered by applying the methods of INTENTIONAL RECOLLECTION; that is, by forming suppositions and comparing them with the ideas already recovered, or by voluntarily delaying upon and revolving in mind such trains as were restored, and thus rousing up others. Such we can hardiy doubt to have been, in the main, the process by which the person of whom we are speaking recovered the knowledge he had lost.

These views, in addition to what has now been said, may be illustrated also by what we sometimes observe in old men. Question them as to the events of early life, and at times they will be unable to give any answer whatever. But whenever you mention some prominent incident of their young days, or perhaps some friend on whom many associations have gathered, it will often be found that their memory revives, and that they are able to state many things in respect to which they were presly silent.

163. Marks of a good memory.

The great purpose to which the faculty of memorv is

subservient, is to enable us to retain the knowledge which we have from our experiences for future use. The prominent marks of a good memory, therefore, are these two, viz., tenacity in retaining ideas, and readiness in bringing them forward on necessary occasions.

FIRST; of tenacity, or power of retaining ideas.-The impressions which are made on some minds are durable They are like channels worn away in stone, and names engraven in monumental marble, which defy the operation of the ordinary causes of decay, and withstand even the defacing touch of time. But other memories, which at first seemed to grasp as much, are destitute of this power of retention. The inscriptions made upon them are like characters written on the sand, which the first breath of wind covers over, or like figures on a bank of snow, which the sun shines upon and melts. The inferiority of the latter description of memory to the former must be obvious; so much so as to require no comment A memory, whose power of retaining is greatly diminished, of course loses a great part of its value.

SECOND; of readiness, or facility in bringing forward what is remembered.-Some persons who cannot be supposed to be deficient in tenacity of remembrance, appear to fail in a confident and prompt command of what they remember. Some mistake has been committed in the arrangement of their knowledge; there has been some defect in the mental discipline; or for some other cause, whatever it may be, they often discover perplexity, and remember slowly and indistinctly. This is a great practical evil, which not only ought to be, but which can, in a great degree, be guarded against.

It is true, that so great readiness of memory cannot Iationally be expected in men of philosophic minds as others, for the reason that they pay but little or no attention to particular facts, except for the purpose of deducing from them general principles. But it is no less true, that, when this want of readiness is such as to cause a considerable degree of perplexity, it must be regarded a great mental defect. And, for the same reason, a prompt command of knowledge is to be regarded a mental ex cellence.

164. Directions or rules for the improvement or the memory. In whatever point of view the memory may be con templated, it must be admitted that it is a faculty always securing to us inestimable benefits. For the purpose of securing the most efficient action of this valuable faculty, and particularly that tenacity and readiness which have been spoken of, the following directions may be found worthy of attention.

(1.) Never be satisfied with a partial or half-acquaintance with things.-There is no less a tendency to intellectual than to bodily inactivity; students, in order to avoid intellectual toil, are too much inclined to pass on in a hurried and careless manner. This is injurious to the memory. "Nothing," says Dugald Stewart, "has such a tendency to weaken, not only the powers of invention, but the intellectual powers in general, as a habit of extensive and various reading without reflection." Always make it a rule fully to understand what is gone over. Those who are determined to grapple with the subject in hand, whatever may be its nature, and to be come master of it, soon feel a great interest; truths, which were at first obscure, become clear and familiar The consequence of this increased clearness and interest is an increase of attention; and the natural result of this is, that the truths are very strongly fixed in the memory.

(II.) We are to refer our knowledge, as much as possible, to general principles. To refer our knowledge to general principles is to classify it; and this is perhaps the best mode of classification. If a lawyer or merchant were to throw all his papers together promiscuously, he could not calculate on much readiness in finding what he might at any time want. If a man of letters were to record in a commonplace book all the ideas and facts which occurred to him, without any method, he would experience the greatest difficulty in applying them to use. It is the same with a memory where there is no classification. Whoever fixes upon some general principles, whether political, literary, or philosophical, and collects facts in illustration of it, will find no difficulty in remembering them, however numerous; when, without such general principles, the recollection of them would have been extremely burdensome

(III.) Consider the nature of the study, and make use of those helps which are thus afforded. This rule may be illustrated by the mention of some departments of science. Thus, in acquiring a knowledge of geography, the study is to be pursued as much as possible with the aid of good globes, charts, and maps. It requires a great effort of memory, and generally an unsuccessful one, to recollect the relative extent and situation of places, the numerous physical and political divisions of the earth, from the book. The advantages of studying geography with maps, globes, &c., are two. (1.) The form, relative situation, and extent of countries become, in this case, ideas, or, rather, conceptions of sight; such conceptions (§ 60) are very vivid, and are more easily called to remembrance than others.

(2.) Our remembrances are assisted by the law of contiguity in place, (§ 145,) which is known to be one of the most efficient aids. When we have once, from having a map or globe before us, formed an acquaintance with the general visible appearance of an island, a gulf, an ocean, or a continent, nothing is more easy than to remember the subordinate divisions or parts. Whenever we have examined, and fixed in our minds the general appearance or outlines of a particular country, we do not easily forget the situation of those countries which are contiguous.

We find another illustration of this rule in the reading of history. There is such a multitude of facts in historical writings, that to endeavour to remember them all is fruitless; and, if it could be done, would be of very small advantage. Hence, in reading the history of any country, fix upon two or three of the most interesting epochs; make them the subject of particular attention; learn the spirit of the age, and the private life and fortunes of prominent individuals; in a word, study these periods not only as annalists, but as philosophers. When they are thus studied, the mind can hardly fail to retain them; they will be a sort of landmarks; and all the other events in the history of the country, before and afterward, will naturally arrange themselves in reference to

them

The memory will strongly seize the prominent

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