Substance Journal

"Bony monster" (septaria)

"Septaria are siliceous nodules crisscrossed with cracks filled with calcite.... Septaria are quite varied, since the name applies not to a particular species of mineral but to a structure which may occur in several.... Partly metallized deposits suggest underwater fishermen in harness and helmets brandishing the catch still transfixed on their harpoons; floating phantoms; tightrope-walking demons with eyes on stalks; a whole chilly sabbath of spirits, harpies, and bacilli" (The Writing of Stones, 45; 55).

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  1. Roger Caillois Mineral Collection Paul A. Harris

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