[2] He advocated for the admission of women to Harvard, and in 1882 became a director of the society which later founded Radcliffe College.

[1] In 1883 he became a professor of Latin, a post which he resigned hardly six weeks before his death at his home in Cambridge, Massachusetts on October 11, 1901.

[2][1] Following the lead of Goodwin's Moods and Tenses (1860), he set himself to study Latin historical syntax, and in 1870 published Analysis of the Latin Subjunctive, a brief treatise, privately printed, and in many ways coinciding with Berthold Delbrück's Gebrauch des Conjunctivs und Optativs in Sanskrit und Griechischen (1871), which, however, quite overshadowed the Analysis.

[2] In 1872 appeared A Latin Grammar for Schools and Colleges, founded on Comparative Grammar, by Joseph H. Allen and James B. Greenough, a work done with great critical care with Joseph Henry Allen.

Also, he occasionally contributed to Harvard Studies in Classical Philology (founded in 1889 and endowed at his instance by his own class) papers on Latin syntax, prosody and etymology — a subject on which he planned a long work on Roman archaeology and on Greek religion at the time of the New Comedy.