“In the first place I wished to amend more thoroughly the text of J. Prevot, which, as I said, he himself largely corrected and supplied from MSS. in the Vatican, and which I have printed in this Edition:  I have therefore compared it with all the other Editions that I could collect, and in this manner have easily removed many errors both of the printers and of Prevot himself.  Afterwards I carefully compared all the Catecheses and the Epistle to Constantinus with two MSS. and some with three, namely iv., vi., viii.–x., xv., xvi., xviii.  The first Codex, written on parchment apparently six hundred years ago, I found among those MSS. which Sir Tho. Roe, our first Ambassador from King James I. to the Great Mogul, brought from the East, and presented to the Bodleian Library.  The second we owe to the diligence of Isaac Casaubon, who collated the Catecheses and Epistle to Constantius  with a MS. which he chanced to find, I think, in some Library in France, and carefully noted all the various readings in the margin.  This copy of Casaubon’s the Right Reverend Father in Christ, John Bishop of Norwich, very kindly lent to me out of his well-furnished Library, and of his great love for learning did not disdain to shew the highest favour to my slight endeavours.”