Having classed the observations of others, I was at last to try what I could substitute for their mistakes, and how I could supply their omissions. I collated such copies as I could procure, and wished for more, but have not found the collectors of these rarities very communicative. Of the editions which chance or kindness put into my hands I have given an enumeration, that I may not be blamed for neglecting what I had not the power to do. By examining the old copies, I soon found that the late publishers, with all their boasts of diligence, suffered many passages; to stand unauthorised, and contented themselves with Rowe's regulation of the text, even where they knew it to be arbitrary, and with a little consideration might have found it to be wrong. Some of these alterations are only the ejection of a word for one that appeared to him more elegant or more intelligible. These corruptions I have often silently rectified; for the history of our language, and the true force of our words, can only be preserved, by keeping the text of authours free from adulteration. Others, and those very frequent, smoothed the cadence, or regulated the measure; on these I have not exercised the same rigour; if only a word was transposed, or a particle inserted or omitted, I have sometimes suffered the line to stand; for the inconstancy of the copies is such, as that some liberties may be easily permitted. But this practice I have not suffered to proceed far, having restored the primitive diction wherever it could for any reason be preferred. The emendations, which comparison of copies supplied, I have inserted in the text; sometimes where the improvement was slight, without notice, and sometimes with an account of the reasons of the change. Conjecture, though it be sometimes unavoidable, I have not wantonly nor licentiously indulged. It has been my settled principle, that the reading of the ancient books is probably true, and therefore is not to be disturbed for the sake of elegance, perspicuity, or mere improvement of the sense. For though much credit is not due to the fidelity, nor any to the judgement of the first publishers, yet they who had the copy before their eyes were more likely to read it right, than we who only read it by imagination. But it is evident that they have often made strange mistakes by ignorance or negligence, and that therefore something may be properly attempted by criticism, keeping the middle way between presumption and timidity.