discriminately to the same forms of composition, the repetition of the same words, or the explication of the same sentiments, the employment must, either by nature or accident, be less suitable to some than others; that the ideas to be contemplated may be too difficult for the apprehension of one, and too obvious for that of another: they may be such as some understandings cannot reach, though others look down upon them as below their regard. Every mind in its progress through the different stages of scholastick learning, must be often in one of these conditions, must either flag with the labour, or grow wanton with the facility of the work assigned; and in either state it naturally turns aside from the track before it. Weariness looks out for relief, and leisure for employment, and surely it is rational to indulge the wanderings of both. For the faculties which are too lightly burdened with the business of the day, may with great propriety add to it some other enquiry; and he that finds himself over wearied by a task, which perhaps, with all his efforts, he is not able to perform, is undoubtedly to be justified in addicting himself rather to easier studies, and endeavouring to quit that which is above his attainment, for that which nature has not made him incapable of pursuing with advantage.

That therefore this roving curiosity may not be unsatisfied, it seems necessary to scatter in its way such allurements as may withhold it from an useless and unbounded dissipation; such as may regulate it without violence, and direct it without restraint; such as may suit inclination, and fit every every capacity; may employ the stronger genius, by

operations of reason, and engage the less active or forcible mind, by supplying it with easy knowledge, and obviating that despondence, which quickly prevails, when nothing appears but a succession of difficulties, and one labour only ceases that another may be imposed.

A book intended thus to correspond with all dispositions, and afford entertainment for minds of dif ferent powers, is necessarily to contain treatises on different subjects. As it is designed for schools, though for the higher classes, it is confined wholly to such parts of knowledge as young minds may comprehend; and as it is drawn up for Readers yet unexperienced in life, and unable to distinguish the useful from the ostentatious or unnecessary parts of science, it is requisite that a very nice distinction should be made, that nothing unprofitable should be admitted for the sake of pleasure, nor any arts of attraction neglected, that might fix the attention upon more important studies.

These considerations produced the book which is here offered to the Publick, as better adapted to the great design of pleasing by instruction, than any which has hitherto been admitted into our seminaries of literature. There are not indeed wanting in the world compendiums of science, but many were written at a time when philosophy was imperfect, as that of G. Valla; many contain only naked schemes, or synoptical tables, as that of Stierius; and others are too large and voluminous, as that of Alstedius; and, what is not to be considered as the least objection, they are

generally in a language, which, to boys, is more difficult than the subject; and it is too hard a task to be condemned to learn a new science in an unknown tongue. As in life, so in study, it is dangerous to do more things than one at a time; and the mind is not to be harassed with unnecessary obstructions, in a way, of which the natural and unavoidable asperity is such as too frequently produces despair.

If the language however had been the only objec tion to any of the volumes already extant, the schools might have been supplied at a small expence by a translation; but none could be found that was not so defective, redundant, or erroneous, as to be of more danger than use. It was necessary then to examine, whether upon every single science there was not some treatise written for the use of scholars, which might be adapted to this design, so that a collection might be made from different authors, without the necessity of writing new systems. This search was not wholly without success: for two authors were found, whose performances might be admitted with little alteration. But so widely does this plan differ from all others. so much has the state of many kinds of learning been changed, or so unfortunately have they hitherto been cultivated, that none of the other subjects were explained in such a manner as was now required; and therefore neither care nor expence has been spared to obtain new lights, and procure to this book the merit of an original.

With what judgment the design has been formed, and with what skill it has been executed, the learned

world is now to determine. But before sentence shall pass, it is proper to explain more fully what has been intended, that censure may not be incurred by the omission of that which the original plan did not comprehend; to declare more particularly who they are to whose instructions these treatises pretend, that a charge of arrogance and presumption may be obviated; to lay down the reasons which directed the choice of the several subjects; and to explain more minutely the manner in which each particular part of these volumes is to be used.

The title has already declared, that these volumes are particularly intended for the use of schools, and therefore it has been the care of the authors to explain the several sciences, of which they have treated, in the most familiar manner; for the mind used only to common expressions, and inaccurate ideas, does not suddenly conform itself to scholastick modes of reasoning, or conceive the nice distinctions of a subtile philosophy, and may be properly initiated in speculative studies by an introduction like this, in which the grossness of vulgar conception is avoided, without the observation of metaphysical exactness. It is observed, that in the course of the natural world no change is instantaneous, but all its vicissitudes are gradual and slow; the motions of intellect proceed in the like imperceptible progression, and proper degrees of transition from one study to another are therefore necessary; but let it not be charged upon the writers of this book, that they intended to exhibit more than the dawn of knowledge, or pretended to raise in the mind any no

bler product than the blossoms of science, which more powerful institutions may ripen into fruit.

For this reason it must not be expected, that in the following pages should be found a complete circle of the sciences; or that any authors, now deservedly esteemed, should be rejected to make way for what is here offered. It was intended by the means of these precepts, not to deck the mind with ornaments, but to protect it from nakedness; not to enrich it with affluence, but to supply it with necessaries. The enquiry therefore was not what degrees of knowledge are desirable, but what are in most stations of life indispensably required; and the choice was determined not by the splendor of any part of literature, but by the extent of its use, and the inconvenience which its neglect was likely to produce.

I. The prevalence of this consideration appears in the first part, which is appropriated to the humble purposes of teaching to read, and speak, and write letters; an attempt of little magnificence, but in which no man needs to blush for having employed his time, if honour be estimated by use. For precepts of this kind, however neglected, extend their importance as far as men are found who communicate their thoughts one to another; they are equally useful to the highest and the lowest; they may often contribute to make ignorance less inelegant; and may it not be observed, that they are frequently wanted for the embellishment even of learning?

In order to shew the proper use of this part, which consists of various exemplifications of such differences of style as require correspondent diversities of pronunciation, it will be proper to inform the