SUPPOSED TO HAVE BEEN WRITTEN AT BRISTOL, BY THOMAS ROWLEY, AND OTHERS, IN THE FIFTEENTH CENTURY. THE THIRD EDITION; TO WHICH IS ADDED AN APPENDIX, CONTAINING SOME OBSERVATIONS UPON THE LANGUAGE OF THESE POEMS; TENDING TO PROVE, THAT THEY WERE WRITTEN, NOT BY ANY ANCIENT AUTHOR, BUT ENTIRELY BY THOMAS CHATTERTON.