578 
Romance  of  Chemical  Elements. 
f  Am.  Jour.  Pharm. 
August,  1 918. 
Table  VIII. 
Chronological  Order  of  Discovery  of  the  Chemical  Elements. 
Year. 
Name. 
Discoverer. 
Source. 
Prehistoric  
Carbon 
Sulphur 
Gold 
Silver 
4000  B.  C  
Copper 
3500  B.  C  
Iron 
Lead 
1600  B.  C  
Tin 
Antimony 
300  B.  C  
Mercury 
Alchemistic  Period: 
1220  
Arsenic 
1459  
Bismuth 
1520  
Zinc 
1669  
Phosphorus 
Beginnings  of  Chem- 
istry: 
1733  
1750  
1751  
1758  
1758  
Founding  of  Chem- 
istry: 
1766  
1772  
1774  
1782. 
1783. 
1787. 
1789. 
1794- 
1707. 
1801. 
1802. 
1803. 
1804. 
Beginnings  of  Ele 
trochemistry: 
1808  
1812 
1817 
Cobalt 
Platinum 
Nickel 
Sodium 
Potassium 
Hydrogen 
Nitrogen 
Oxygen 
Chlorine 
Magnese 
Barium 
Tellurium 
Molybdenum 
Tungsten 
Strontium 
Zirconium 
Uranium 
Titanium 
Yttrium 
Chromium 
Beryllium 
Columbium 
Tantalum 
Cerium 
Osmium 
Iridium 
Palladium 
Rhodium 
Calcium 
Magnesium 
Boron 
Iodine 
Selenium 
(Egypt) 
(Chaldaea) 
Theophrastus 
Albertus  Magnus 
Basil  Valentin 
Paracelsus 
Brandt 
Brand 
Wood,  Watson 
Cronstedt 
Marggraf 
Marggraf 
Cavendish 
Rutherford 
Priestley 
Scheele 
Scheele 
Scheele 
M  tiller 
Hjelm 
d'Elhujar 
Cruikshank 
Klaproth 
Klaproth 
Gregor 
Gadolin 
Vauquelin 
Vauquelin 
Hatchett 
Ekeberg 
Klaproth 
Tennant 
Tennant 
Wollaston 
Wollaston 
Davy 
Davy 
Davy,  Thenard,  etc 
Courtois 
Berzelius 
Native 
Native 
Native 
Native 
(Mt.  Sinai) 
Meteorites 
Cinnabar 
Orpiment 
Zincblende 
Urine 
Cobalt  ore 
Platina 
Kupfer  nickel 
Sodium  salts 
Potassium  salts 
Acids 
Air 
Mercuric  oxide 
Muriatic  acid 
Pyrolusite 
Baryte 
' '  Aurum  paradoxum 1 
Molybdenite 
Scheelite 
Strontianite 
Zircon 
Pitchblende 
Ilmenite 
Gadolinite 
Crocosite 
Beryl 
Columbite 
Yttrotantalite 
Cerite 
Platinum 
Platinum 
Platinum 
Platinum 
Lime 
Magnesia  alba 
Borax 
Sea-kelp 
Chamberdeposits 
