Written in 1916 by Edgar Rice Burroughs, "The Lost Continent" is the story of Jefferson Turck, a 21 year old Navy Lieutenant for Pan America. The premise is that the US and the rest of the western hemisphere didn't participate in the "Great War" (World War I), and Europe went on to destroy itself. And since the consolidation of all North and South America nations into the single nation of Pan America, no one has bothered to travel outside the longitude boundaries of 30d on the east and 175d on the west. But due to an act of sabotage his airplane/submarine/ship ends up beyond 30d and he and a few comrades eventually come ashore in Europe, where he finds a land of lions, tigers, and a few savage people.
I assume this was meant as a social commentary to say that the only outcome of the war would be destruction. But for a futuristic story, I find it unimaginitive and lacking any real vision. Other than the airplane/submarine/ship creation, the men appear to fire regular rifles similar to what would have existed in 1916. And while I don't find the writing style particularly appealing, I realize that ERB has a lot of fans out there who do appreciate it. So I guess fans of ERB will enjoy this book a lot more than I did (I read the PDA version).