Ernst Heinrich Haeckel

The theory of recapitulation, designated the Bio - genetic Law by Ernst Heinrich Haeckel in 1872

RECAPITULATION JANE OPPENHEIMER 1968

In America the famous botanist Asa Gray, who had long been a correspondent of Darwin's but whose advocacy of the new theory had not been anticipated, became an ardent propagandist; while in Germany Ernst Heinrich Haeckel, the youthful but already noted zoologist, took up the fight with equal enthusiasm.

A History of Science: in Five Volumes. Volume IV: Modern Development of the Chemical and Biological Sciences 1904

While ecology has been said to have its roots in the Greek science of Hippocrates, Aristotle, and Theophrastus, or in the 18th-century natural history of Linnaeus and Buffon, or in Darwin and Wallace’s evolutionary biology, ecology as a named science did not emerge as a “self-conscious” discipline with its own name until Ernst Heinrich Haeckel (1834 – 1919) first used the word oecologie in 1866.

An Introduction to Ecological Economics~ Chapter 2 2007