It is strange that Art historians hitherto have made so little of the Comacine Masters. I do not think that Cattaneo mentions them at all. Hope, although divining a universal Masonic Guild, enlarges on all their work as Lombard; Fergusson disposes of them in a single unimportant sentence; and Symonds is not much more diffuse; while Marchese Ricci gives them the credit of the early Lombard work and no more. I was led at length to a closer study of them by the two ponderous tomes on the _Maestri Comacini_[1] by Professor Merzario, who has got together a huge amount of material from old writers, old deeds, and old stones. But valuable as the material is, Merzario is bewildering in his redundancy, confusing in his arrangement, and not sufficiently clear in his deductions, his chief aim being to show how many famous artists came from Lombardy. I wrote to ask Signor Merzario if I might associate his name with mine in preparing a work for the English public, in which his research would furnish me with so much that is valuable to the history of art, but to my regret I found he had died since the book was written, so I never received his permission; though his publisher was very kind in permitting me to use the book as a chief work of reference. With Merzario I have collated many other recognized authorities on architecture and archæology, besides archivial documents, and old chronicles. I have tried to make some slight chronological arrangement, and some intelligible lists of the names of the Masters at different eras. The researches of the great archivist Milanesi in his _Documenti per la Storia dell' Arte Senese_, and Cesare Guasti in his lately published collection of documents relating to the building of the Duomo of Florence, have been of immense service in throwing a light on the organization of the Lodges and their government. All that Signor Merzario dimly guessed from the more fragmentary earlier records of Parma, Modena, and Verona, shines out clear and well-defined under the fuller light of these later records, and helps us to read many a dark saying of the older times. My thanks for much kind assistance in supplying me with facts or authorities, are due to the Rev. Canonico Pietro Tonarelli of Parma cathedral; the Rev. Vincenzo Rossi, Priore of Settignano; Commendatore John Temple Leader of Florence; and to my brother, the Rev. William Miles Barnes, Rector of Monkton, who has written the "English link" for me. Acknowledgments are also due to Signor Alinari and Signor Brogi of Florence, and to Signor Ongania of Venice, for permitting the use of their photographs as illustrations. FOOTNOTE: [1] Professor Giuseppe Merzario.--_I Maestri Comacini. Storia Artistica di Mille duecento anni, 600-1800._ Published in 1893 by Giacomo Agnelli, of 2, Via S. Margherita, Milan. Two vols., large octavo. (Price 12 frcs.) CONTENTS PAGE