Complex sentence: Libby was denied an assistant professorship, and finally in 1902 he was obligated to leave Wisconsin for disobedience and devoting too much time to ornithological work, notwithstanding the fact that his ornithological work was of a caliber to merit publication in scholarly articles.
Split into simpler sentences: Libby was denied an assistant professorship, and finally in 1902 he was obligated to leave Wisconsin. One factor in the decision to terminate his career at Wisconsin was his devotion to ornithological work, notwithstanding the fact that his ornithological work was of a caliber to merit publication in scholarly articles.