The Natural History of Pliny, Volume 6 (of 6)Note 3339 — BOOK XXXVII. THE NATURAL HISTORY OF PRECIOUS STONES. (continued 2)John Bostock translationAs to the identity of “nitrum,” see B, xxxi. c, 46.◇Copy noteReturn to BOOK XXXVII. THE NATURAL HISTORY OF PRECIOUS STONES. (continued 2)