Johannes Müller

Johannes Peter Müller (14 July 1801 – 28 April 1858), was a German physiologist, comparative anatomist, ichthyologist, and herpetologist. In 1833 he became Professor of physiology at the University of Berlin.
In the later part of his life he chiefly devoted himself to comparative anatomy. Fishes and marine invertebrates were his favourite subjects. He took 19 trips to the Baltic and North Sea, the Adriatic and the Mediterranean to investigate salt-water life.
He authored a comprehensive work on the anatomy of amphibians, which in his era including reptiles. Also, he described several new species of snakes.
Müller mentored some distinguished physiologists and biologists, including Hermann von Helmholtz, Emil du Bois-Reymond, Theodor Schwann, Friedrich Gustav Jakob Henle, Carl Ludwig and Ernst Haeckel. In 1834, he was elected a foreign member of the Royal Swedish Academy of Sciences. He was awarded the Copley Medal of the Royal Society in 1854.