Jean-Henri Fabre was a French entomologist, naturalist, teacher, chemist, physicist, botanist, and author. He is best remembered for his study of insects; Fabre is widely regarded as the father of modern entomology. He is also remembered for his interesting literary work on the lives of insects. Jean-Henri Fabre's life and career inspired the 1951 biographical movie Monsieur Fabre.
René Antoine Ferchault de Réaumur was a French writer and entomologist. He is best remembered for his contribution to the field of entomology. René Antoine Ferchault de Réaumur is also remembered for introducing the Réaumur temperature scale.
Born to famous botanist Augustin Pyramus de Candolle, Alphonse Pyrame de Candolle had initially studied law but switched to botany later. Part of the Royal Swedish Academy of Sciences, he made significant contributions to phytogeography. He also called the inaugural International Botanical Congress for standardizing botanical nomenclature.