Prize dissertation, which was honored with the Magellanic Gold Medal, by the American Philosophical Society, January, 1793. Cadmus: or A treatise on the elements of written language : illustrating, by a philosophical division of speech, the power of each character, thereby mutually fixing the orthography and orthoepy. : [One line in Latin from Horace] : With an essay on the mode of teaching the surd or deaf, and consequently dumb, to speak. / By William Thornton, M.D. member of the Societies of Scots Antiquaries of Edinburgh and Perth; the Medical Society, and the Society of Nautical Hist. of Edin: the American Philosophical Society, &c.