Note 2 — Chapter I · The Stone Age: its Duration and its Place in Time.
N. D'Anvers translation
Pliny calls them ceraunia gemma (“Natural History,” book ii., ch. 59 book xxxvii., ch. 51).
N. D'Anvers translation
Pliny calls them ceraunia gemma (“Natural History,” book ii., ch. 59 book xxxvii., ch. 51).