Essay upon his Language and Versification, an Introductory Discourse and Notes’ [anon.], 1775, 4 vols.; 5th vol., containing a glossary, 1778 (Gent. Mag. 1783, i. 461). This edition of Tyrwhitt was reissued in 1798, and has often been reprinted. So late as 1891 his notes and glossary were condensed and arranged under the text in the edition of Chaucer in No. 32 of Sir John Lubbock's ‘Hundred Books’ (cf. Notes and Queries, 7th ser. vi. 86, 133, 214). In 1775 this edition was considered ‘the best edited English Classick that ever has appeared,’ and Professor Skeat in his edition (vol. iv. 1894) speaks of it ‘as a work of high literary value, to which I am greatly indebted for many necessary notes,’ but dwells on its grammatical errors and the frequent introductions of words into the text. Guest praises his sagacity, but points out his defects (English Rhythms, i. 180–1, ii. 255–6). 3. ‘Dissertatio de Babrio Fabularum Æsopearum Scriptore’ [anon.], 1776. Some fables, never before edited, of Æsop, from the Bodleian Library, were added to it. An ‘auctarium’ of this dissertation was appended to his edition of Orpheus in 1781. Both essay and auctarium were reprinted by T. C. Harles at Erlangen in 1785, and were included in 1810 in the ‘Fabulæ Æsopicæ’ of Franciscus de Furia. 4. ‘Poems supposed to have been written at Bristol by Thomas Rowley and others in the Fifteenth Century, with a preface and glossary’ [anon.], 1777; 2nd edit. 1777; 3rd edit., with an appendix to prove that they were written entirely by Chatterton, 1778. Nichols says that Tyrwhitt was at first inclined to believe in the authenticity of the poems, but that, finding good ground for changing his opinion, he cancelled several leaves (Illustr. of Literature, i. 158; Johnson, Letters, ed. G. B. Hill, i. 398, 404; Gent. Mag. 1788, i. 187–8; Nichols, Lit. Anecdotes, ix. 529–31). 5. ‘Vindication of the Appendix to the Poems called Rowley's,’ 1782. It was ‘reckoned completely victorious’ (Walpole, Letters, vi. 412, viii. 279; the opposite view was, however, maintained by Samuel Roffey Maitland [q. v.] as late as 1857). 6. ‘De Lapidibus: Poems in Greek and Latin, attributed by some to Orpheus. Based on Gesner's edition, but Tyrwhitt “recensuit notasque adjecit.” With “auctarium de Babrio,”’ 1781. His notes and preface are included in the edition of Germannus (Leipzig, 1805). Ruhnken, who had made Tyrwhitt's acquaintance at Paris, reviewed it in Wyttenbach's ‘Bibliotheca Critica,’ ii. 85–94 (reprinted by Kidd in Ruhnken's ‘Opuscula,’ 1807, Tract 15), with the highest praise (cf. also Kidd's preface to Porson's Tracts, pp. xcv–xcviii). Tyrwhitt is frequently referred to in the letters of Ruhnken to Wyttenbach (ed. Kraft, 1834, pp. 24, 28, 35, 46, 159, 166–7). 7. ‘Conjecturæ in Strabonem, with Latin Inscription to George Jubb, Canon of Christ Church,’ dated London, 13 July 1783; reprinted, with preface by T. C. Harles, at Erlangen in 1788. 8. ‘Two Dissertations by Samuel Musgrave,’ 1782. These were edited by Tyrwhitt for the benefit of Musgrave's family. He had previously given the emendations on Euripides which were added by Musgrave as an appendix (pp. 133–76) to his ‘Exercitationum in Euripidem libri duo’ (1762), and he supplied Schweighäuser with Musgrave's notes on Appian (ed. of Schweighäuser, i. pref. pp. xix–xx). 9. ‘Oration of Isæus against Menecles,’ 1785. 10. ‘Aristotelis de Poetica liber, Græce et Latine,’ 1794. This was edited by Bishop Burgess, with the assistance of Bishop Randolph, and was dedicated to Shute Barrington [q. v.], bishop of Durham, who inscribed some lines to Tyrwhitt on an urn in his garden at Mongewell, Oxfordshire (Gent. Mag. 1807, ii. 1147; Nichols, Illustr. of Lit. v. 616). There were many editions of this work. 11. ‘Thomæ Tyrwhitti Conjecturæ in Æschylum, Euripidem, et Aristophanem. Accedunt epistolæ diversorum ad Tyrwhittum,’ 1822. Possibly edited by Peter Elmsley (1773–1825) [q. v.] (Notes and Queries, 6th ser. vi. 149–50).
In 1814 the Cambridge press promised a reprint in one volume of Tyrwhitt's ‘Babrius, the Pseud-Orpheus,’ and other treatises, but it never came out. A volume of his opuscula, prepared for the press after his death by Thomas Kidd, but never issued, is among the Dyce books at the South Kensington Museum, which also possesses the autograph manuscript of his ‘Epistle to Florio’ (ib. 2nd ser. ix. 198, 6th ser. vi. 71–2, 149–50). He and Matthew Duane [q. v.] purchased at an auction in London in June 1772 three ancient marbles from Smyrna, and gave them to the British Museum. Tyrwhitt's account of them is in the ‘Archæologia’ (iii. 230–5, and see ib. pp. 184, 324). His ‘notæ breves’ on Toup's emendations of Suidas are in that scholar's edition of that work (1790, iv. 419–29); and Monk, in his edition of the Alcestis, inserts Tyrwhitt's conjectures from the copy of it at the British Museum. Burgess dedicated to him the second edition (1781) of the ‘Miscellanea Critica’ of Richard Dawes, and embodied in it (pp. 344–491) many of his observations. Tyrwhitt helped Brunck in his edition of Sophocles, and William Cleaver [q. v.], bishop of St. Asaph, was indebted to him in his 1789 edition of
