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The Footnote June 24, 2026 · Pompey's Pillar, Alexandria

The 27-Metre Granite Column in Alexandria That Has Almost Nothing to Do With Pompey

The 27-metre red granite column that stands on the Alexandrian acropolis where the [Serapeum once was](/articles/serapeum-destruction-391) is the largest free-standing ancient column in the Mediterranean world. The Crusaders gave it the name "Pompey's Pillar" in the 14th century. It was actually erected in 297 AD as a victory monument for the Roman emperor Diocletian, 350 years after Pompey was dead.

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The Cabinet June 24, 2026 · Berlin Institute of Hygiene

The Cholera Hero's Therapeutic Vaccine for Tuberculosis Killed Patients and Almost Destroyed His Reputation

Robert Koch announced a tuberculosis cure in August 1890 — a glycerol extract from the tuberculosis bacterium that he called *tuberculin*. Within nine months it was substantially clear the substance did not cure tuberculosis and that it had killed several hundred patients. The fiasco nearly destroyed Koch's career.

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