Philocophus, or, The deafe and dumbe mans friend : exhibiting the philosophicall verity of that subtile art, which may inable one with an observant eie, to heare what any man speaks by the moving of his lips : upon the same ground ... that a man borne deafe and dumbe, may be taught to heare the sound of words with his eie, & thence learne to speake with his tongue /