Note 20 — PHILOSOPHICAL JOURNAL. (continued 2)
Reading edition
Ibid, p. 42.—Pliny writes of the quarries, quantis libet molibus cædendis sufficiunt Lapidicinæ. Lib. 36, cap. 7. They produced red porphyry of a most beautiful, close-grained kind; so Pliny says, rubet porphyrites in eadem Œgypto.