Note 1902 — BOOK XXXV. AN ACCOUNT OF PAINTINGS AND COLOURS.
John Bostock translation
In B. xxxiii. c. 40. According to Aetius, syricum was made by the calcination of pure ceruse, (similar to the “usta” above mentioned). He states also that there was no difference between sandyx and syricum, the former being the term generally used by medical men.