Note 86 — Chapter IV · HISTORY OF THE SILK MANUFACTURE CONTINUED FROM THE INTRODUCTION OF SILK-WORMS INTO EUROPE, A.D. 530, TO THE FOURTEENTH CENTURY.
Reading edition
Otto Frisingen, Hist. Imp. Freder. l. i. c. 33. in Muratori, Rerum Italicarum Scriptores, tom. vi. p. 668.