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Plan of part of the Catacomb of St. Saturine, near Rome, via Salara, under the Villa Gangalandi, excavated, like most of the others, in the pozzolana and volcanic tufo, of which the lower soil of Rome and its environs is composed. This Catacomb offers naturalists a means of examining the nature of this soil at great depth, and of easy access.
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Section of part of the Catacomb of St. Saturine.
Seroux
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