Whilst the greatest effort has been made to ensure the quality of this text, due to the historical nature of this content, in some rare cases there may be minor issues with legibility. British and Foreign artists and connoisseurs, especially to the following, whose words have been fully quoted: - George Aitchison, r.a.; Thomas Brock, r.a.; Sir C. Purdon Clarke, S. Pepys Cockerell, Edward Lanteri, Sir J. E. Millais, Sir E. J. Poynter.