Flavius Vopiscus in Aurelian. c. 45, in Hist. August. p. 224. See Salmasius ad Hist. Aug. p. 392, and Plinian. Exercitat. in Solinum, p. 694, 695. The Anecdotes of Procopius (c. 25) state a partial and imperfect rate of the price of silk in the time of Justinian.