Lazzaro Spallanzani, Italian biologist

Lazzaro Spallanzani, Italian biologist

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Caption: Lazzaro Spallanzani (1729-1799), Italian biologist. In 1767, Spallanzani's experiments on sealed, well-boiled broth, questioned the theory of the spontaneous generation of microbes. Spallanzani also showed that some organisms can live without oxygen. He achieved artificial insemination in amphibians, insects and dogs. He also discovered that bats could fly and hunt even when blinded. He was also the first to observe blood passing from arteries to veins in warm-blooded animals. He also studied volcanoes and the digestive system.

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