[1] From 1888 to 1892 he taught as "Privatdozent" (associate professor without tenure) at Leipzig and became coeditor (with Gustav Schirmer) of Anglia, Germany's second academic journal dedicated to the study of English.
[2] Together with Bernhard ten Brink, Julius Zupitza, John Koch, and Eugen Kölbing he counts among the most entrepreneurial founding scholars of English Studies.
It would have set a new high-water mark for lexicography [...]; and it anticipated the prophecy of the editors of the Oxford Dictionary that further progress in the field must be with the specialized vocabularies of certain subjects, authors, and periods.
"[6] In addition to his work on Chaucer, his monograph on Carlyle, and his edition of Sidney, he published a host of essays and reviews, some of which were republished by his son, Felix Flügel, in 1930.
[8] Flügel shared with many of his fellow expatriates from Germany in the late nineteenth- and early twentieth century an enthusiasm about transplanting what they considered German ideas and ideals into the New World.