PROLOGUE Upon a paper attached to the Narrative which follows, Doctor Hesselius has written a rather elaborate note, which he accompanies with a reference to his Essay on the strange subject which the MS. illuminates. This mysterious subject he treats, in that Essay, with his usual learning and acumen, and with remarkable directness and condensation. It will form but one volume of the series of that extraordinary man's collected papers. As I publish the case, in this volume, simply to interest the "laity," I shall forestall the intelligent lady, who relates it, in nothing; and after due...