The Natural History of Pliny, Volume 6 (of 6)Note 2681 — BOOK XXXVI. THE NATURAL HISTORY OF STONES.John Bostock translationBoth of them varieties of calcareous tufa, Ajasson thinks.◇Copy noteReturn to BOOK XXXVI. THE NATURAL HISTORY OF STONES.Return to BOOK XXXVI. THE NATURAL HISTORY OF STONES.