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Updated: October 19, 2026
It is one of the water-made rocks, in which so many fossils have been found; while in the fire-rocks there are no remains of anything which ever lived. The water-rocks are so called because water has had so much to do with the making of them; for they have been very slowly formed by the gravel and grains of sand which have been washed down by streams and torrents, and left behind in their course.