In 1881, Fannie Hesse, who was working as a technician for her husband Walther Hesse in the laboratory of Robert Koch, suggested agar as an effective setting agent since it had been common place in jam making for some time.
The Eilshemius family were immigrants of Dutch-German origin – Angelina's brother Louis Eilshemius is known as an important painter, Swiss painter Louis Léopold Robert was their common grandfather.
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As a ship's doctor on the New York Line 1872/73 he examined seasickness – his works were classified by Prof. Gavingel of Le Havre as the first scientific study on this topic at all.
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