Barnes was the author of numerous books, mostly of a theological nature, and those were of a controversialist, exhibiting conspicuous anti-Anglican bias. A notable work was his 1922 book on
Bishop Barlow and Anglican Orders, whereby he attempted to demonstrate that
Bishop Barlow had not been validly consecrated as a bishop, and thereby rendering the Anglican succession invalid. This was firmly rebuffed by Canon
Claude Jenkins, the librarian at
Lambeth Palace, who had the relevant documents within his control, in a lengthy review article in
The Journal of Theological Studies. Barnes attended the exposition of the
Shroud of Turin in 1931, the first time it had been exhibited since 1898. He also attended the exposition in 1933, on the 1900th anniversary of the
Crucifixion, and this resulted in the publication of his work
The Holy Shroud of Turin in 1934. A notable non-religious work was
The Man of the Mask, published in 1908, in which Barnes identified the
Man in the Iron Mask as
James de la Cloche, the putative illegitimate son of
Charles II. •
The English Liturgical Colours and recent writings thereon, (1890: Church Printing Co). •
The Popes and the Ordinal, (1896: Robert Browning). •
Eton in the Olden Days, (1898: Robert Browning). •
St. Peter in Rome, and his Tomb on the Vatican Hill, (1900: Swan Sonnenschein). •
Low Mass in England before the Reformation, (1905: Robert Browning). •
The Man of the Mask, (1908: Smith, Elder). •
Blessed Joan the Maid, (1909: Burns & Oates). •
The Early Church in the Light of the Monuments: A Study in Christian Archaeology, (1913: Longmans & Co). •
Bishop Barlow and Anglican Orders: A Study of the Original Documents, (1922: Longmans). •
The Catholic Schools of England, (1926: Williams and Norgate). •
Catholic Oxford, (1933: Catholic Truth Society). •
No Sacrifice, No Priest, (1933: Catholic Truth Society). •
The Holy Shroud of Turin, (1934: Burns Oates & Washbourne). •
The Martyrdom of Peter and Paul, (1933: OUP). •
Christianity at Rome in the Apostolic Age: An attempt at reconstruction of history, (1938: Methuen). ==Death and legacy==