Ash, the books start with the 20,000 Leagues Under the Sea, then In Search of the Castaways, and finally with this book. I really love this, and very educational too. They construct a battery and telegraph, and use chemical formulas to make and use powerful liquids from raw materials! It tells you how these things work, and how they made it. This is a truly wonderful work. Jules Verne is a very scientific
man, and is known to travel much more than people of his time. Enjoy Jules Verne, and The Mysterious Island!
A must-read for everyone.