Chapter

 1 III   |      African continent—if it is necessary for your happiness, why
 2 VI    |        was in readiness. It was necessary, by the way, for the doctor
 3 VI    |      sir,” said Joe, “if it was necessary for your expedition, I could
 4 X     |        more rapidly still, when necessary. My valve, at the top of
 5 XIII  |        and there, and it became necessary to keep a sharp lookout
 6 XIV   |       renew the supply of water necessary for my cylinder, and so
 7 XIV   |      itself. It was, therefore, necessary to sustain it by a certain
 8 XVI   |        rouse you, if it becomes necessary.”~“But, master, wouldn’t
 9 XVII  |      will even wait for one, if necessary, and will make the balloon
10 XVII  |       the prairie. So it became necessary to detach the balloon from
11 XIX   |     avoid Mount Longwek, it was necessary to seek a more slanting
12 XIX   | profound obscurity, that it was necessary to use redoubled vigilance.~
13 XXI   |        to feed the cylinder, if necessary, without there being any
14 XXIII |       her.~Moreover, it was not necessary to gather many of these
15 XXVIII|       that element must be very necessary to life.”~“Undoubtedly,
16 XXVIII|        said Joe. “Well, if it’s necessary, we’ll have to do it, but
17 XXXI  |        populous country, it was necessary to keep on the watch for
18 XXXIII| position of the balloon. It was necessary to watch only the borders
19 XXXVI |         be feared, and then, if necessary, we can go higher.”~“Wait,
20 XLI   |       it; it will be absolutely necessary!”~“Samuel! Doctor!”~“Your