As a result of the appeal contained in the letter, the charter of 1534 was submitted to the Master of the Rolls, who concurred in the opinion that it was valid; and on 24 July, 1584, Thomas entered into a recognizance in 500 marks before the Vice-Chancellor. Books now began to issue from Thomas's press and some of them quickly excited the odium theologicum; when, for instance, a work by Walter Travers in support of Presbyterianism was printed, the greater part of the edition was confiscated. Ever sens I hard that they had a Printer in Cambridg (wrote Archbishop Whitgift to Lord Burghley), I did greatlie fear this and such like inconveniences wold followe, nether do I thingk that yt wyll so stay, for althowgh Mr Vicechancellor that now ys, be a verie careful man and in all respectes greatlie to be commended, yet yt may fawle owt hereafter, that some such as shal succeade hym wyll not be so well affected, nor have such care for the publike peace of the Church, and of the state, but whatsoever your Lordship shall thingk good to be done in this matter ... I wyll performe yt accordinglie. I thingk yt verie convenient that the bokes should be burned, beeing verie factius and full of untruthes: and that (yf printing do styll there continew) sufficient bonds with suerties shold be taken of the printer not to print anie bokes, unlesse they be first allowed by lawfull authoritie, for yf restrante be made here and libertie graunted there, what good can be done....[19] From this time forward, indeed, Cambridge printing was for many years continually harassed by two disturbing forces--theological suspicion and by commercial jealousy. Thus, in 1585, when it was discovered that London printers had printed various books already printed by the universities, a grace was passed forbidding Cambridge booksellers to sell, and Cambridge students to buy, "any book printed at London or elsewhere in England, which had been or thereafter should be printed at Cambridge or Oxford," always provided that the university printers did not sell their books at a higher price than that fixed by the Vice-Chancellor and the others named in Thomas's articles. In the next year the archbishop was again growing anxious; in June, 1586, it was laid down by a Star Chamber ordinance that no book was to be printed without either his own or the Bishop of London's approval, and a few months later Whitgift wrote to his very loving friend the Vice-Chancellor: