24. Chap. 24.-Syricum.

CHAP. 24.—SYRICUM.

Among the artificial colours, too, is syricum, which is used as an under-coating for minium, as already[1] stated. It is prepared from a combination of sinopis with sandyx.

1. 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.