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Darwin Correspondence Project


William Henry Dallinger


Clergyman and biologist. Became a Wesleyan minister in 1861; served in Liverpool, 1868–80. Made microscopical researches into minute septic organisms, especially flagellate protozoa, 1870–80. With his colleague, John James Drysdale, showed that flagellates could acclimatise to ordinarily lethal temperatures, and that their spores were also resistant to very high temperatures. Dallinger conducted a seven-year study (1880–86) to test whether adaptive changes could be rapidly induced on organisms with short life cycles in order to show evolutionary change. Governor and principal of Wesley College, Sheffield, 1880–8. President of the Royal Microscopical Society, 1884–7; of the Quekett Club, 1890–2. FRS 1880.