That the unfortunate mutineers had penetrated some distance into the country soon became evident, for we traversed the entire length of the lagoon and fully a mile of the river after it had narrowed down to about a quarter of a mile in width ere we sighted a break of any kind in the thick entanglement of mangrove trees that lined the margin of the stream.  But even this, so Higgins informed us, was not the creek of which we were in search, and which he believed lay nearly a mile farther up the stream.  Of the one actually in sight he denied any knowledge, and I soon became convinced that it had escaped the notice of the mutineers.