Fritz Müller

Born in Windischholzhausen near Erfurt, Fritz Müller studied the natural sciences in Germany before emigrating to Brazil in 1852. He settled in the colony that became Blumenau, in Santa Catarina, where he worked at different times as a farmer, teacher, and naturalist while building an extraordinary record of the region’s wildlife.

Müller is best remembered as an early champion of Darwinism. His 1864 book Für Darwin offered one of the first major pieces of evidence in support of evolution by natural selection, and Charles Darwin valued him as an important correspondent and observer. Müller’s name lives on in “Müllerian mimicry,” the idea that harmful species can benefit by sharing similar warning signals.

What makes his story especially appealing is the way he did major science far from Europe’s big institutions. From Brazil, he studied crustaceans, insects, plants, and many other organisms with patience and precision, showing how much discovery can come from careful attention to the living world close at hand.