A new paper by Dr. Emmanuel Nantet in “Archiv für Papyrusforschung und verwandte Gebiete” titled “The Dung Boats of Memphis”

The πλοῖον κοπρηγόν was a specific kind of boat that was dedicated to the conveyance of manure. It is evidenced in Memphis only by two Roman papyri. It seems that there were several kinds of such boats, operating on various scales and revealing various architectural features. The conveyance of dung may imply elites who were interested in a lucrative agriculture.

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