APPENDIX. 



459 



TABLE L 



TABLE OF THB DISCOVERY OF OKRTAEf ELEMENTS. 



Authors of the discovery. 



Dates. 



Known to the ancients. 



Names of Elements. 

 Gold, . 

 Silver, . 

 Iron, 

 Copper, . 

 Mercury, 

 Lead, . 

 Tin,. . 

 Sulphur, 

 Carbon, 



Antimony, . . . Described by Basil "Valentine, 1490 



Bismuth, . . . Described by Agricola, 1530 



Zinc, ..... First noted by Paracelsus, .... 16th centur} r . 



Phosphorus, . . Brand, , 1660 



Arsenic, . . . ) grant 1733 



Hydrogen, . . Cavendish, 1766 



Chlorine, . . , Scheele, 1774 



Oxygen, . . . Priestly, 1774 



Manganese, . . Gahn and Scheele, 1774 



Chromium,. . . Vauquelin, 1797 



Potassium, 

 Sodium, . 



Sir Humphrey Davy, 1807 



Calcium, 

 Boron, . 



Iodine, .... Courtois, 1811 



Silicon, .... Berzelius, 1823 



Bromine, . . . Ballard, 1826 



Aluminium, . . "Wohler, . 1828 



Magnesium, . . Bussy, 1829 



