COMPLETE TITLE: Memoirs of the Life of Charles Macklin, Esq. Principally Compiled from His Own Papers and Memorandums; Which Contain His Criticisms on and Characters and Anecdotes of Betterton, Booth, Wilks, Cibber, Garrick, Barry, Mossop, Sheridan, Foote, Quin, and Most of His Contemporaries; Together with his Valuable Observations on the Drama, on the Science of Acting and on various other Subjects: The Whole Forming A Comprehensive but Succinct History of the Stage; Which includes a Period of One Hundred Years. By James Thomas Kirkman, of the Honourable Society of Lincoln's Inn. In Two Volumes.
DEDICATION:
Alexander, Lord Loughborough [i.e. Alexander Wedderburn, Earl of Rosslyn].
Online text: GOOGLE BOOKS: Vol. I - Vol. II - INTERNET ARCHIVE: Vol. I - Vol. II - HATHI TRUST: Vol. I - Vol. II

The first volume (pp. 358-370) contains The Art and Duty of an Actor (see), from Macklins' notes for a lecture on the history of the theatre and acting at the British Inquisition, a sort of academy founded by Macklin in London, Hart Street, in 1754. Macklin developed his theory of acting in The Science of Acting, but the manuscript of the work was lost in a shipwreck in 1771 (see vol. II, pp. 46-47).

TRANSLATIONS:
French: Mémoires sur Garrick et sur Macklin, traduits de l'anglais par le traducteur des oeuvres de Walter Scott, précédés d'une Histoire abrégée du Théâtre Anglais, par M. Després, Paris, Ponthieu, 1822 (see). Combines The Life of David Garrick by Arthur Murphy (1801) (see) and Kirkman's text.