Chapter

 1 2 |            Great Eyrie a refuge for unknown monsters of the sky! Would
 2 3 |     dangerous detours. This was the unknown, the spur to our attempt.
 3 4 |             accumulators were of an unknown model, using some unknown
 4 4 |           unknown model, using some unknown fluid.~The public imagination,
 5 4 |           invisible. He remained as unknown as when he had first appeared
 6 5 |        marine mammals, how was this unknown monster to be classed? Did
 7 5 |             be as tremendous and as unknown as that of the remarkable
 8 7 |        keeping their presence there unknown. They must have realized
 9 7 |             its owner for remaining unknown? Are other disasters to
10 8 |            should sell it. Can this unknown be already some dangerous
11 8 |         place of the undiscoverable unknown! And to know if he would
12 10|            greater resources as yet unknown. How had he been able to
13 13|        water, by processes hitherto unknown. And I asked myself with
14 13|           some reason for remaining unknown? Such a precaution would
15 14|        should not find myself in an unknown district. But would this
16 16| construction of their balloon, this unknown Robur had suddenly appeared
17 16|          had been constructed on an unknown isle of the Pacific called
18 16|             hiding-place was wholly unknown, its discovery lay scarcely
19 17|         evidently intends to remain unknown. As to what he intends to
20 17|          Island X, somewhere in the unknown regions of the Pacific.~