From 1923 to 1945 he was a lecturer at the Prussian Academy of Sciences.

In 1883 he became a member of the Prussian Academy of Arts.

Unlike other academies, the Prussian Academy was not directly funded out of the state treasury.

In 1912, he was appointed to the Prussian Academy of Arts.

He also became a member of the Prussian Academy of Arts.

The museum's mineral collections date back to the Prussian Academy of 1700.

Beginning in 1920 he was president of the Prussian Academy of Arts.

A new critical edition was started by the Prussian Academy in 1909, of which 22 volumes were published by 1963.

The Prussian Academy of Arts made him an honorary member in 1788.

In 1926, he was elected to the Prussian Academy of Art.