Twee wetenschappelijke opnamen van cholera in gelatine before 1885

"Twee wetenschappelijke opnamen van cholera in gelatine" (Two Scientific Images of Cholera in Gelatin) is a pair of photographic prints by Émile van Ermengem dating from before 1885. They show the results of a scientific experiment on cholera, a serious bacterial infection. The images depict test tubes containing gelatin cultures of cholera, one of which is a pure culture, and the other of which contains microbes collected from a patient with cholera. This work, captured in a scientific format, demonstrates the important role that photography played in 19th-century research.