Robert Eliah Vallis

American photographer, naturalist and investment analyst

Brazilian professor, librarian, dentist and naturalist

Headmaster and naturalist

American artist, taxidermist, naturalist, museum curator

medical practitioner, radiotherapist, toxicologist and natural historian

Hungarian naturalist

French botanist and naturalist

bookseller and naturalist

Brazilian naturalist, zoologist and biologist

Russian naturalist who studied the Il'men National Forest

German philosopher

American writer, critic, and naturalist

American zoologist

American ornithologist, marine biologist, entomologist, and explorer

American writer and scientist

Italian naturalist

British Engineer and Naturalist

British diplomat, linguist, botanist, naturalist and botanical collector