New York: D. Appleton and Company, 1892.
Hardcover. Very good. Two-volume set in original brown cloth, gilt spine lettering. Corners lightly bumped and rubbed, small nick in spine cloth on Volume II, short tears or small chips at head of spine on each volume. Internally clean and tightly bound, with the bookplate of Gilbert Hilton Scribner (Secretary of State of New York, 1870-1873) on each front pastedown. Ernst Heinrich Philipp August Haeckel (1834-1919) was a German zoologist, naturalist, eugenicist, philosopher, physician, marine biologist, and artist who discovered, described and named thousands of new species, mapped a genealogical tree relating all life forms, and coined many terms in biology, including ecology, phylum, and phylogeny. He promoted and popularised Charles Darwin's work in Germany and developed the influential but no longer widely held recapitulation theory ("ontogeny recapitulates phylogeny") claiming that an individual organism's biological development, or ontogeny, parallels and summarises its species' evolutionary development, or phylogeny (Wiki).