Vasari's Introduction on Technique has not been included, because it has no immediate connection with the Lives. In any case, there already exists an adequate translation by Miss Maclehose. All Vasari's other prefaces and introductions are given in the order in which they are found in the edition of 1568. With this much explanation, I may pass to personal matters, and record my thanks to many Florentine friends for help in technical and grammatical questions; to Professor Baldwin Brown for the notes on technical matters printed with Miss Maclehose's translation of "Vasari on Technique"; and to Mr. C. J. Holmes, of the National Portrait Gallery, for encouragement in a task which has proved no less pleasant than difficult. G. DU C. DE V. LONDON, _March 1912_. TO THE MOST ILLUSTRIOUS AND MOST EXCELLENT SIGNOR COSIMO DE' MEDICI, DUKE OF FLORENCE MY MOST HONOURED LORD, Seeing that your Excellency, following in this the footsteps of your most Illustrious ancestors, and incited and urged by your own natural magnanimity, ceases not to favour and to exalt every kind of talent, wheresoever it may be found, and shows particular favour to the arts of design, fondness for their craftsmen,[1] and understanding and delight in their beautiful and rare works; I think that you cannot but take pleasure in this labour which I have undertaken, of writing down the lives, the works, the manners, and the circumstances of all those who, finding the arts already dead, first revived them, then step by step nourished and adorned them, and finally brought them to that height of beauty and majesty whereon they stand at the present day. And because these masters have been almost all Tuscans, and most of these Florentines, of whom many have been incited and aided by your most Illustrious ancestors with every kind of reward and honour to put themselves to work, it may be said that in your state, nay, in your most blessed house the arts were born anew, and that through the generosity of your ancestors the world has recovered these most beautiful arts, through which it has been ennobled and embellished.