Note (65) — BOOK II. (continued 2)
James Greive translation
65. Tarras, gypsum, is a-kin to lime; for it is procured by burning a stone, which ought to resemble the alabaster, or marble. The best kind is made from lapis specularis. Plin. lib. xxxvi. cap. 24. Amongst the moderns some take this to be the calx of alabaster, others of Muscovy glass, others of the selenites.