In 1940, the University appointed him extraordinary professor for industrial property and copyright.

In 1918 he was nominated as an extraordinary professor.

In 1766 he was appointed extraordinary professor of philosophy at Göttingen.

From 1877 he was an extraordinary professor for ancient history.

It was there that he became professor extraordinary of zootomy in 1834.

He became an extraordinary professor in 1730, and a year later was promoted to full professor.

In 1840 he was also appointed extraordinary professor in the university.

From 1770 until 1772 he was extraordinary professor of mathematics and logic in Leipzig.

In 1834, he became extraordinary professor of theology there.

Again he held the position of extraordinary professor in Innsbruck.