The other dogs raised sleepy eyes, but seeing Tiger and the girl together, took no notice whatever, except by a thwack or two of their stumpy tails. Annie was now looking not only at the tents, but for something else which Zillah, her nurse, had told her might be found near to many gypsy encampments. This was a small subterranean passage, which generally led into a long-disused underground Danish fort. Zillah had told her what uses the gypsies liked to make of these underground passages, and how they often chose those which had two entrances. She told her that in this way they eluded the police, and were enabled successfully to hide the goods which they stole. She had also described to her their great ingenuity in hiding the entrances to these underground retreats.