Ernst Hallier

German botanist and philosopher (1831-1904).

Ernst Hallier (15 November 1831, in Hamburg – 19 December 1904, in Dachau) was a German botanist and mycologist. As a young man he was trained as a gardener, later studying botany at the universities of Berlin, Jena and Göttingen. From 1858 he served as an instructor at the Pharmaceutical Institute in Jena, where in 1860 he obtained his habilitation. In 1865 he became an associate professor, resigning his professorship 19 years later (1884). Hallier claimed that many diseases were caused by fungi including cholera, typhoid and measles. He claimed that he had extracted the causal fungi from pat