seven
o’clock
`` It was fully eleven by the time I had completed these arrangements , and I immediately betook myself to bed , with full confidence in the efficiency of my invention . Nor in this matter was I disappointed . Punctually every sixty minutes was I aroused by my trusty chronometer , when , having emptied the pitcher into the bung-hole of the keg , and performed the duties of the condenser , I retired again to bed . These regular interruptions to my slumber caused me even less discomfort than I had anticipated ; and when I finally arose for the day , it was seven o'clock , and the sun had attained many degrees above the line of my horizon . `` April 3d . I found the balloon at an immense height indeed , and the earth 's apparent convexity increased in a material degree . Below me in the ocean lay a cluster of black specks , which undoubtedly were islands .