(b) Photographic copies (two sheets) of letters of Laurentius Valla in Cod. Vaticanus Lat. 3908, ff. 147 and 159, obtained by C. F. Walters for comparison with the handwriting of the emendations in Harley MS. 2493. See " The Codex Agenensis and Valla " in The Classical Quarterly, vol. xi, July, 1917...