From March, 1729, with the short break in 1730, Theobald had been in steady correspondence with Warburton, and most of his letters, with a few of those of Warburton, have been preserved by Nichols (see _id._ ii., pp. 189, 607). But it would have been more fortunate for Theobald’s reputation had they perished. The cruel contempt and bitterness of Warburton’s references to him after their final estrangement may be offensive, but the correspondence shows that they were not without some justification. Theobald submits his conjectures anxiously to the judgment of Warburton, and again and again Warburton saves him from himself. In one of the letters Theobald rightly condemns Pope’s proposed insertion of “Francis Drake” in the incomplete line at the end of the first scene of _Henry VI., Part 1._; but not content with this flawless piece of destructive criticism he argues for inserting the words “and Cassiopeia.” The probability is that if Warburton had not condemned the proposal it would have appeared in Theobald’s edition. “With a just deference to your most convincing reasons,” says Theobald, “I shall with great cheerfulness banish it as a bad and unsupported conjecture” (_id._ ii., p. 477); and this remark is typical of the whole correspondence. A considerable share of the merit of Theobald’s edition—though the share is mostly negative—belongs to Warburton, for Theobald had not taste enough to keep him right when he stepped beyond collation of the older editions or explanation by parallel passages. Indeed, the letters to Warburton, besides helping to explain his reputation in the eighteenth century, would in themselves be sufficient to justify his place in the _Dunciad_. Warburton had undoubtedly given Theobald ungrudging assistance and was plainly interested in the success of the edition. But as he had gauged Theobald’s ability, he had some fears for the Preface. So at least we gather from a letter which Theobald wrote to him on 18th November, 1731: