Part,  Chapter

 1 1,3|         consequence, to make his observation from Prospect Heights, taking
 2 1,3|   calculate by bringing back the observation to the level of the sea,
 3 1,4|        of the cliff on which the observation had been made, was found
 4 1,4|   prepared in time for the solar observation, which had to be made exactly
 5 1,4|          approached at which the observation was to be made. What Cyrus
 6 1,4|  everything for his astronomical observation. He chose a clear place
 7 1,4|          consideration errors of observation, as he had done for the
 8 1,4|      attributed to errors in the observation was, it may be seen, of
 9 2,9|         his operation. His first observation had given him the situation
10 2,6|         help one day making this observation,-~"If he does not speak
11 3,1|          defend it." ~"A useless observation," said Spilett. "Lincoln
12 3,1|     twilight would soon make any observation extremely difficult. ~"What
13 3,1|         in reply to the sailor's observation, a bright light flashed
14 3,4|        they were shoving off, an observation from Gideon Spilett arrested
15 3,6|        therefore, will apply the observation already made as to the adventures
16 3,7| companions ventured to offer any observation to Captain Nemo. He had
17 3,0|         of Lincoln Island. Then, observation being taken of what remained