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1 Now known as Heliotrope, bloodstone, or blood jasper. It is of a deep-green colour, with red spots.
2 "Furning under the sun."
3 See B. xxii. c. 29.
4 "Stone of Hephæstos" or "Vulcan."
5 It acting as a burning-glass, probably.
6 See B. iv. c. 20, and B. v. c. 22.
7 "Genitals of Mercury." This singular stone does not appear to have been identified. See Note 9 above.
8 "Sixty colour stone."
9 See B. v. cc. 5, 8, and B. vi. c. 34.
10 "Hawk stone." It is perhaps identical with the "Circos," mentioned in Chapter 56. Aëtius says that Hieracitis was of a greenish hue.
11 "Sand-stone." Ajasson thinks that this was a granular quartz, of a friable nature when subjected to compression.
12 As to the identity of "nitrum," see B. xxxi. c. 46.
13 "Horn of [Jupiter] Hammon." He here alludes to the Ammonites of modern Geology, an extinct race of molluscous animals that inhabited convoluted shells, and which are commonly known as "snake-stones." They abound in strata of the secondary formation, and vary from the size of a bean to that of a coach-wheel.
14 The reading of this word is doubtful.
15 "Hyæna stone."
16 As to this stone, see B. xxxvi. c. 25.
17 "Yellow" stone. See Chapter 45.
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