From this time forward the Clementine Vulgate (sometimes under the name of Clement, sometimes under that of Sixtus, sometimes under both names)(87) has been the standard edition for the Roman Church; by the Bull of 1592, every edition must be assimilated to this one, no word of the text may be altered, nor even variant readings printed in the margin(88). Thus the modern attempts at a scientific and critical revision of this version have come from students mainly outside the communion of the Roman Church. The design of Bentley for a critical Greek Testament is described below (Chap. V); it was obvious that for its prosecution the MSS. of the Vulgate would have to be collated as carefully as those of the Greek text itself; and accordingly the variant readings of a good number were collected by Bentley himself, nos. 3, 59, 60, 61, 62, 63, 64, 65, 66, 68, 69, 70, 71, 72, 74, 75, 76, 77, 82, 83, 85, 155, 160; other MSS. were collated by his friend and colleague John Walker, who worked much at Paris in 1719 and the following years; to him we owe collations of nos. 10, 11, 15, 16, 19, 20, 21, 52, 96, 97, 102, 151, 164, while he obtained collations of the Tours MSS. (nos. 106, 107, 108, 166) from L. Chevalier, through their common friend Sabatier; and of the Oxford MSS. (nos. 86, 87, 89, 90, 148, 161), from David Casley. Walker died, however, in November, 1741, six months before the great Bentley, and the projected edition came to naught(89). Their collations have not been published, but are contained in the following volumes, in the Library of Trinity College, Cambridge: B. 17. 5 containing collations by Walker, Chevalier, Casley, and Bentley; and B. 17. 15 containing collations by Bentley; and they have been made use of by Bishop Wordsworth in his edition of the Vulgate(90).