Eight years later, he was appointed a professor of law in the University of Detroit in 1912.

In 2004 she was appointed full Professor of Cell Biology in the same University.

In the following years he was appointed professor of technical architecture in the University of Rome.

In 1883, he was appointed professor of mental and moral philosophy in the University of Texas.

In 1986 he was appointed as professor of literature in the University of Valencia.

In 1872 he was appointed professor of chemistry and mineralogy in the University of Pennsylvania.

Two years later, he was appointed assistant professor of economics and statistics in the University of Leipzig.

In 1863 he was appointed professor of mineralogy in the University of Vienna.

In 1832 he was appointed professor of natural history in the University of Neuchâtel.

In 1810 he was appointed professor of philosophy in the University of Berlin.