London, 1759-1771. Mixed editions. 4to. Signed in ink at foot of "Synopsis" dedication page by Floyer Sydenham, editor and translator. Contemporary tan calf. With book-plates of Leonard Smelt and Charles Henry Hall. In two volumes. Bound with "A Synopsis or General View of the Works of Plato" "Meno, A Dialogue Concerning Virtue" "The Greater Hippias... Concerning the Beautifull" "The Lesser Hippias... Concerning Voluntary and Involuntary Error" "The Rivals... Concerning Philosophy" "Io... Concerning Poetry" "The Banquet... Concerning Love. The First Part." "Proposals for a New Subscription"