Can someone help me identify font in this screenshot of the book page?

No, but someone can point you to the Type ID board: http://typophile.com/typeid.
Why is it that noone seems to notice the by-line "All topics are welcome—except font ID requests."? Does it need to be
LARGER?
Much easier:
http://fount.artequalswork.com/
When you have time to read, read natural language. :-)
hhp
@hrant, that link reminded me of another useful bookmarklet that may turn out to be no less important, though in a different field.
http://anandam.name/source_verifier/
It calculates hashes for a web page and any included Javascript files, giving the user a chance to spot if something has changed somewhere.
Captured from web.archive.org on 3 Aug 2014. view this capture
Just a thought - How about making a Font Identification logo banner out to the right, just like what is done for "Follow Typophile on Twitter"? I imagine Typophile even could have a design contest for it.