Complex sentence: Pieter Anton Tiele (18 January 1834, Leiden-22 January 1889, Utrecht) acted for many years as the librarian of Utrecht University, and distinguished himself by his bibliographical studies, more especially by his several works on the history of colonization in Asia.
Split into simpler sentences: Pieter Anton Tiele (18 January 1834, Leiden-22 January 1889, Utrecht) was for many years as the librarian of Utrecht University. He was distinguished himself by his bibliographical studies, more especially by his several works on the history of colonization in Asia.