Note 1230 — SALTPETRE. GUNPOWDER. AQUAFORTIS.
William Johnston translation
Apicius, iii. 1, p. 70.—Martial, lib. xiii. ep. 17.—Plin. xix. 8, §41, 3; xxx. 10.—Columella, xi. 3, 23. [Carbonate of soda, as is well known, is still frequently used for this purpose in culinary operations.]