PREFACE TO THE THIRD EDITION.
The second edition of this pamphlet (consisting of 1,500 copies) being exhausted, and the result being very gratifying to my mind, in the large amount of satisfaction and benefit which I am able to report from evidence of others (beyond my most sanguine expectations), considering the hitherto limited circulation, I have felt impelled to publish, advertise, and sell this third edition, at cost price, which I am informed must be sixpence a copy. If this small charge, however, should yield any profit, I shall devote it to the Printers' Pension Society, or some other benevolent institution; but I have no such expectation, or would very gladly reduce the charge at starting.
The first and second editions were no very serious expense to me, scarcely three pence a copy, but the circulation of them, and the
