Can you tell us the name of the book? It might give a clue as to what the handwriting refers to.
Thanks to all of you for the curious and creative ideas!
The book is called
The Philosophy of Mystery, by Walter Dendy, and is from 1845.
And yes, tonepad, I could see that last part being a reference to a Mc or Mac surnmame...
I'm pretty sure the book would have lived in London in the late 1800s (though there's a Manchester bookseller's label) so I was trying to figure out if the Nc might correspond to a contemporary postal code system, but that seems to be a dead end.
Bookbox, some kind of internal private library cataloguing system definitely seems plausible. "R
D" for "received" is intriguing...And thanks for ruling out Greek...
The book has a spiritualist/supernatural phenomena theme, so it's also possible that this is some kind of symbolic or coded reference of the sort that those occultist types loved. I've thrown this up on another discussion forum in that vein to see if anything pops out to anyone there...
Thanks again for playing along with a newb, folks!