Part,  Chapter

1 2,2|        back. A second casing of zinc lined the interior of the
2 2,2|      Nothing!" ~The covering of zinc was torn off and thrown
3 2,8|        composed of retort coal, zinc, and copper. Copper was
4 2,8|    involving great labor. As to zinc, it may be remembered that
5 2,8| Becquerel in 1820, and in which zinc only is employed. The other
6 2,8|  Harding then took two slips of zinc, one of which was plunged
7 2,8|    transmitted from the slip of zinc in the bottle to that in