1802
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![Louis Pasteur [1822 - 1895], microbiologist and chemist](https://api.europeana.eu/thumbnail/v2/url.json?uri=https%3A%2F%2Fiiif.wellcomecollection.org%2Fimage%2FV0006592.jpg%2Ffull%2F500%2C%2F0%2Fdefault.jpg&type=IMAGE)
![Empedocles. Line engraving after [C. V.].](https://api.europeana.eu/thumbnail/v2/url.json?uri=https%3A%2F%2Fiiif.wellcomecollection.org%2Fimage%2FV0001768.jpg%2Ffull%2F500%2C%2F0%2Fdefault.jpg&type=IMAGE)
