Note 2962 — BOOK XXXVII. THE NATURAL HISTORY OF PRECIOUS STONES.
John Bostock translation
It has been supposed by some that this in reality was Tourmaline, and Woodward has identified it with Belemnites. See Beckmann, Hist. Inv. Vol. I. p. 86. Bohn’s Edition. See further as to “Lyncurium,” B. viii. c. 57, and Chapter 13 of this Book.