I'm still reading, but think I've enjoyed the endnotes as much as the story itself so far.
I'm fascinated by Verne's vision and definitely liked reading a little of his own history in the preface of my edition, though the story is reading slower than I would've thought. I did not realize that it had originally been published as a serialization. I can imagine readers of the day looking forward with great excitement to the next instalment. Maybe I can employ that tactic, setting aside a bit to read each day, to get me to the end. It normally makes up my lunchtime reading...which of late is only about 15 minutes a day.
Great comments by all so far....leaving me with fresh perspective as I dive back in (pun intended).