This volume brings together the published and the previously unpublished works on language by the seventeenth-century thinker George Dalgarno. His 'Art of Signs' - the earliest seventeenth-century work to attempt a fully elaborated universal language scheme - is presented here for the first time with a full English translation alongside the Latin. Also included is a further book-length tract, broadsheets, and correspondence, all of which provide the modern reader with better access to the ideas of this original and stimulating thinker.

This volume brings together the published and the previously unpublished works on language by the seventeenth-century thinker George Dalgarno. His 'Art of Signs' - the earliest seventeenth-century work to attempt a fully elaborated universal language scheme - is presented here for the first time with a full English translation alongside the Latin. Also included is a further book-length tract, broadsheets, and correspondence, all of which provide the modern reader with better access to the ideas of this original and stimulating thinker.

An edition of the recently discovered notebook used in the seventeenth-century by John Wallis to teach language to the 'deaf mute' Alexander Popham, who could not inherit unless he could speak - one of the most famous cases in the history of deaf education. David Cram and Jaap Maat place the work in its personal, social, and scientific contexts.