CAMBRIDGE,
Printed for the AUTHOR:

Sold by Fletcher & Hodson in Cambridge; S. Crowder in Pater-noster-Row, J. Dodsley in Pall-Mall, M. Hingeston near Temple-Bar, and G. Kearsly in Ludgate-street, London; J. Fletcher at Oxford; and the Booksellers at Norwich, Lynn, York, and Newcastle. 1767.

(Price HALF A CROWN.)

PREFACE.

To explain the Use of Education, no Method can be more effectual, than to shew what dull Mistakes and silly Notions Men are apt to be led into for Want of it. These Mistakes are so numerous, that if we were to undertake to divulge all the Errors that Men of no Knowledge in the Sciences labour under, the shortest Way would be to publish a compleat System of Natural Philosophy, which Learning, as it may be acquired by reading the different Books, which have already been wrote upon that Subject, in this Æra of the Sciences, such an Undertaking would be quite needless at this Time, even supposing the Author capable of that laborious Work.

If the following Sheets do but

serve to divest Men of some of those unreasonable Obstinacies with which they and their Forefathers have long been prepossessed, the Time will be well laid out, both of the Writer and Reader.

Be not affronted, gentle Reader, at my taxing thee with Error, with Obstinacy, or the like; thou mayest not be one of that Stamp; for any Thing I know you may have studied the Sciences, you may be well versed in Mechanics, Optics, Hydrostatics, and Astronomy; you may have made the Tour of Europe, if not, you may soon do it in Post-Chaises, and be almost as wise as you was when you went out; or you may be one of those whom bountiful Nature has blessed with a most excellent Understanding, a quick Apprehension, and a discerning Judgment, and yet not have been so fortunate, or