Part,  Chapter

 1 2,8| necessary materials for making a battery, and the most difficult
 2 2,8|       useless to manufacture the battery and other accessories. ~
 3 2,8|   himself with manufacturing his battery. ~It was necessary to obtain
 4 2,8|        was necessary to obtain a battery with a constant current.
 5 2,8|        manufacture a very simple battery, resembling as nearly as
 6 2,8|  disposal. ~The way in which the battery was composed was as follows,
 7 3,4|          spoke of constructing a battery to command the channel and
 8 3,5|          the fire of this aerial battery. ~"Captain," said Pencroft
 9 3,5|           what do you say of our battery? All the pirates in the
10 3,8|    resembling the discharge of a battery of machine-guns. ~Cyrus