96 Proceedings oj the Royal Irish Academy. 
Table of Fourteen JEiements, with Name of Discoverer and Date, 
ELEMENT. 
NAME. 
DATE. 
16. 
PotEssium. 
Davy. 

1807 
17. 
Calcium. 
Davy. 
1808 
18. 
Scandium. 
Nil son. 
1879 
19. 
Titanium. 
Gregor. 
1789 
20. 
Vanadium. 
Sefstrom. 
1831 
21. 
Chromium. 
Vanquelin. 
1797 
22. 
Manganese. 
Galin. 
1774 
23. 
Copper. 
Prehistoric. 
24. 
Zinc. 
Paracelsus. 
xvi. century. 
25. 
Gallium. 
De Boisbaudran. 
1875 
26. 
Germanium. 
Winkler. 
1886 
27. 
Arsenic. 
Brandt. 
1733 
28. 
Selenium. 
Berzelius. 
1817 
29. 
Bromine. 
Balard. 
1826 
Jidditional Isolated Elements. 
30. 
Iron. 
Prehistoric. 
31. 
Nickel. 
Cronstedt. 
1751 
32. 
1 
Cobalt. 
Brandt. 
1735 
