John Addington Symonds's An Introduction to the Study of Dante, Ed. 2, 1890;
Paget Toynbee's Dictionary of the Divina Commedia, 2 parts;
William Warren Vernon's Readings on the Purgatorio of Dante, chiefly based on the Commentary of Benvenuto da Imola; Intro. by the Dean of St. Paul's, 2 vols., 1889;
Dr. Edward Moore's Time References in the Divina Commedia, London, 1887;
Dr. E. Moore's Contributions to the Textual Criticism of the Divina Commedia, Cambridge, 1889.
STANDARD ENGLISH TRANSLATIONS, THE DIVINE COMEDY.
The Divine Comedy, the Inferno, a literal prose translation with the text of the original collated from the best editions, with explanatory notes by J. A. Carlyle, Ed. 6, 1891 (contains valuable chapters on manuscripts, translations, etc.);
Divina Commedia, edited with translation and notes by A. J. Butler, 1892;