The subheading entries are generally in chronological order, not alphabetical.
"History of the United States, Volume 6 (of 6)"
E. Benjamin Andrews
The subheading before the monologue, "Thou thoughtest that I was altogether such an one as thyself," indicates the current of Browning's ideas.
"Browning and the Dramatic Monologue"
S. S. Curry
Under each of these headings the books are divided into 'Graece' and 'Latine,' but 'Grammatica' and 'Theologia' have each the additional subheading 'Hebraice.
"The Book-Hunter at Home"
P. B. M. Allan