Johann Ernst Immanuel Walch

Johann Ernst Immanuel Walch (29 August 1725 – 1 December 1778) was a German theologian, linguist, and naturalist from Jena.

Life He was the son of the theologian Johann Georg Walch and the brother of theologian Christian Wilhelm Franz Walch.

He studied Semitic languages at the University of Jena, and also natural science and mathematics. In 1749 he published Einleitung in die Harmonie der Evangelien. In 1750 he was appointed professor extraordinarius of theology.

Amongst his theological works were Dissertationes in Acta Apostolorum (1756–1761); (1772). One significant result was the beautifully illustrated, four-volume Die Naturgeschichte der Versteinerungen ("The Natural History of Petrifactions"), released from 1768 to 1773, and also published in French and Dutch editions. A comprehensive chapter on trilobites in 1771 contains the first use of the word "trilobite" and predates other equally comprehensive treatments by 50 years. Introductio in linguam graecam, 1763;