The Secret of the Island was another of the series of Voyages Extraordinaires which ran through a famous Paris magazine for younger readers, the Magasin Illustré. It formed the third and completing part of the Mysterious Island set of tales of adventure. We may count it, taken separately, as next to Robinson Crusoe and possibly Treasure Island, the best read and the best appreciated book in all that large group of island-tales and sea-stories to which it belongs.