Complex sentence: From 1873 to 1886 he was an associate professor of anatomy and anthropology at Leipzig, and in 1886 he became a professor of anatomy and head of the anatomical institute at the University of Dorpat.
Split into simpler sentences: From 1873 to 1886 he was an associate professor of anatomy and anthropology at Leipzig. In 1886 he became a professor of anatomy and head of the anatomical institute at the University of Dorpat.