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Degeneration: A Chapter in Darwinism

By Sir E. Ray Lankester
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About This Book

The author examines degeneration as an evolutionary process whereby organisms lose structures and complexity in response to parasitism, sessile habits, or specialized lifestyles. He combines theoretical discussion about the role of hypothesis and the aims of science with comparative anatomical examples—parasites and reduced arthropods, barnacles, ascidians, and skin mites—to show how reduced organs, simplified physiologies, and altered life histories can be adaptive outcomes. The book surveys causes, varieties, and evidential patterns of regression, arguing that degeneration complements progressive evolution and must be interpreted within a causal, Darwinian framework.

About the Author

Lankester, Sir E. Ray portrait

Sir E. Ray Lankester

Sir E. Ray Lankester was a prominent British zoologist and naturalist, known for his contributions to the understanding of evolution and biology. He played a significant role in popularizing scientific ideas through his accessible writings. His notable works include "Degeneration: A Chapter in Darwinism," where he explores the implications of Darwinian theory, and "Diversions of a Naturalist," which reflects his keen observations of nature. Lankester's essays, often published in collections such as "Science from an Easy Chair," demonstrate his ability to engage a general audience with complex scientific concepts. His legacy includes a commitment to science education and public understanding of natural history.

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