Were you reading an abridged kids' edition?
My Penguin Classics edition is 245 pages. On the short side, but not excessively so. Personally, Journey to the Center of the Earth has always been my favorite of Verne's. It's such a shame, there's never been a good movie version.
As far as Victorian and Edwardian period classics go, I'm reading Captains Courageous by Kipling. It's a great read, and has very little racism or colonial paternalist condescension, unlike most of Mr. "White Man's Burden's" works.
My all-time favorite, though, would be The Wind in the Willows. It's my boot up the ass of anyone who thinks The Piper at the Gates of Dawn refers to Pink Floyd.
Same as the wankers who automatically associate the Rime of the Ancient Mariner with Metallica.