The German biblical scholar Constantin von Tischendorf (1815-74) published his monumental eighth edition of the Greek New Testament between 1869 and 1872. Influenced by the pioneering scholarship of Karl Lachmann (1793-1851), who had first moved away from relying on the Textus Receptus, Tischendorf placed key emphasis on the witness of older uncial manuscripts, most notably the Codex Sinaiticus (which he rediscovered) and the Codex Vaticanus. His painstaking work laid the foundations for the creation of modern critical texts, and the vast amount of manuscript evidence he collated has ensured that this edition remains a standard work of reference for biblical scholars and textual critics. Following Tischendorf's death, the work's Latin prolegomena was issued in separate parts by Caspar René Gregory (1846-1917), assisted by Ezra Abbott (1819-84). First published in 1894, this part contains sections IX-XIII and addresses the versional and patristic evidence.