Out of curiosity, I looked at the book in question to see if there was colophon information. Some books include the typeface names used. This one did not.
Then I did a search for 19th century free ebooks with type specimens and found one called Shniedewend & Lee Co's specimen book and price list of type, Shniedewend & Lee Co, Mackellar, Smiths & Jordan (1873) ( link ). Most (read: all) publishers/printers use(d) manufactured typefaces and in the 1870s, specimen books were the way they picked and purchased them.
On page 174 I see a specimen labeled "English Monastic" which is pretty close.
It looks like someone made a "free for personal use" font named "K22 Monastic" which is based upon this or one like it ( link )