Duffield published: •
Masston: a Story of these Modern Days (London, 1877), novel, with
Walter Herries Pollock. •
Peru in the Guano Age: being a short Account of a recent Visit to the Guano Deposits, with some Reflections on the Money they have produced and the Uses to which it has been applied (1877). •
Needless Misery at Home and abounding Treasure in the West under our own Flag; Old Town and New Domains, or Birmingham and Canada revisited (1880), advocacy of English parishes purchasing land in Canada . •
The Prospects of Peru, the End of the Guano Age and a Description thereof, with some Account of the Guano Deposits and "Nitrate" Plains (1881). •
Don Quixote (1881, translator), as
The Ingenious Knight Don Quixote de la Mancha, a New Translation from the Originals of 1605 and 1608, with some Notes of Bowie, J. A. Pellicer, Clemencin, and others (1881, 3 vols.) This was work begun with
Henry Edward Watts, of which two separate versions appeared. It had a bibliographical account of the books of chivalry connected with the story, and passages in verse rendered by
James Young Gibson. •
Don Quixote, his Critics and Commentators, with a brief Account of the Minor Works of Cervantes and a Statement of the Aim of the greatest of them all (1881). •
The Beauty of the World: a Story of this Generation, 1886 [1885], 3 vols. •
Recollections of Travels Abroad (1889). Duffield also contributed a note on "The Lost Art of Hardening Copper" to
Heinrich Schliemann's
Ilios; the City and Country of the Trojans (Leipzig, 1880). ==Notes==