The present volume is an expanded form of a smaller sketch which was kindly received by the public last autumn. On larger lines and with greater fullness of detail, I have here tried to give some account of Sandro Botticelli, both as the painter and the man; of his relations with the Medici and the Florentine humanists on the one hand, and of his connection with Savonarola and the Piagnone revival on the other. At the same time I have endeavoured to follow the course of his artistic training and development, and to enumerate and describe the works which, in the opinion of the best critics, may be attributed to this master with certainty.