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Printed by Lochhead & Gracie, 2

Wool-Market, BERWICK. 3

TO

SIR JOHN HARTOPP, BART.

SIR, · TT is fit the public should receive through your

hands what was written originally for the assistance of your younger itudies, and was then presented to you.

It was by the repeated importunities of our learned friend Mr John Eames, that I was persuaded to revise these Rudiments of Logic; and when I had once fuffered myself to begin the work, I was drawn still ona ward far beyond my first design, even to the neglect, or too long delay of other pressing and important demands that were upon me.

It has been my endeavour to form every part of this treatise both for the instruction of students, to open their way into the sciences, and for the more extentive and general service of mankind, that the Gentleman and the Christian might find their account in the perusal as well as the Scholar. I have therefore collected and proposed the chief principles and rules of right judgment in matters of common and sacred importance, and pointed out our most frequent mistakes and prejudices in the concerns of life and religion, that we might better guard against the springs of error, guilt and forrow, which surround us in every state of mortality.

You know, Sir, the great design of this noble science is to rescue our reasoning powers from their unhappy favery and darkness; and thus with all due fubmiffon and deference it offers a humble afstance to divine revelation. Its chief business is to relieve the natural weaknefses of the mind by some better efforts of nature; it is to diffuse a light over the understanding in our inquiries after truth, and not to furnish the tongue with debate and controversy. True Logic is not that noisy thing that deals all in dispute and wrangling, to which former ages had debased and confined it, yet its disciples muít acknowledge also, that they are taught to vindicate and defend the truth, as well as to search it out. True Logic doth not require a long detail of hard words to amuse mankind, and to puff up the mind with empty founds, and a pride of false learning ; yet some diftinétions and terms of art are neceflary to range every idea in its proper elass, and to keep our thoughts from confusion. The world ':37 now grown so wife as not to suffer this valuable art to be engrossed by the Schools. In so polite and knowng an age, every Man of Reason will covet some acquaintance with Logic, fince it renders its daily service to wise dom and virtue, and to the affairs of common life as, well as to the sciences.

I will not presume, Sir, that this little book is improved since its first composure, in proportion to the improvements of your manly age. But when you shall please to review it in your retired hours, perhaps you may refreth your own memory in fome of the early parts of Learning: and if you find all the additional remarks and rules made fo familiar to you already by your own observation, that there is nothing new among them, it will be no unpleasing reflection that you have lo far anticipated the present zeal and labour of,

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