Note 3288 — BOOK XXXVII. THE NATURAL HISTORY OF PRECIOUS STONES. (continued 2)
John Bostock translation
“Golden light.” Ajasson suggests that this may have been a yellow phosphate of lead, which emitted light at night, from its close vicinity to naphtha. Bologna stone, Bolognian spar, or sulphate of Barytes, has also been suggested. Topaz, too, is mentioned.