Schwann, THEODOR, naturalist and founder of the cell-theory, was born 7th December 1810, at
Neuss in Rhenish Prussia, studied at Bonn, Würzburg and Berlin, and became assistant to Johannes Müller. In 1838 he became professor of Anatomy at Louvain, in 1848 at Liège, where he also lectured on physiology. He died at Cologne, 14th January 1882. He made many discoveries on the digestion, muscular structure, contractility of the arteries, and the nervous system; but his chief contributions to science, practically establishing the cell-theory, are found in his classic Microscopic Investigations on the Accordance in the Structure of Plants and Animals (1839; Eng. trans. 1847), the main ideas of which are explained at CELL, Vol. III. p. 46.