Charles Bonnet

Charles Bonnet
Bonnet painted by Jens Juel, 1777.
Born(1720-03-13)13 March 1720
Died20 May 1793(1793-05-20) (aged 73)
Scientific career
FieldsNaturalist

Charles Bonnet (French pronunciation: [ʃaʁl bɔnɛ]; 13 March 1720 – 20 May 1793) was a Genevan[a] naturalist and philosophical writer. He is responsible for coining the term phyllotaxis to describe the arrangement of leaves on a plant.[1] He was among the first to notice parthenogenetic reproduction in aphids and established that insects respired through their spiracles. He was among the first to use the term "evolution" in a biological context. Deaf from an early age, he also suffered from failing eyesight and had to make use of assistants in later life to help in his research.

Chain of being from Traité d'insectologie, 1745


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  1. ^ Livio, Mario (2003) [2002]. The Golden Ratio: The Story of Phi, the World's Most Astonishing Number (First trade paperback ed.). New York City: Broadway Books. p. 109. ISBN 0-7679-0816-3.