viii CONTENTS. 



IV. 



METALS AND THEIR COMBINATIONS. 



PAGE 



20. General remarks regarding metals. 



Derivation of names, symbols, and atomic weights Melting- 

 points, specific gravities, time of discovery, valence, occur- 

 rence in nature, classification, and general properties of metals 

 Alloys, their manufacture and properties 217-255 



21. Potassium. 



General remarks regarding the alkali metals Occurrence in 

 nature Potassium hydroxide, oxide, carbonate, bicarbonate, 

 percarbonate, nitrate, chlorate, sulphate, sulphite, hypophos- 

 phite, iodide, bromide Analytical reactions 255-262 



22. Sodium. Lithium. Caesium. Rubidium. 



Occurrence in nature Sodium chloride, hydroxide, perox- 

 ide, carbonate, bicarbonate, sulphate, sulphite, thiosulphate, 

 phosphate, nitrate, borate Analytical reactions Lithium 

 Caesium Rubidium 262-268 



23. Ammonium. 



General remarks Ammonium ion Ammonium chloride, 

 carbonate, sulphate, nitrate, phosphate, iodide, bromide, and 

 sulphide Analytical reactions Summary of analytical char- 

 acters of the alkali-metals 268-272 



24. Magnesium. 



General remarks Occurrence in nature Metallic magne- 

 sium Magnesium carbonate, oxide, sulphate, nitride Re- 

 marks on tests for metals Analytical reactions 272-276 



25. Calcium. Strontium. Barium. Radium. 



General remarks regarding alkaline earths Occurrence in 

 nature Calcium oxide, hydroxide, carbonate, sulphate, phos- 

 phate, acid phosphate, and hypophosphite Bone-black and 

 bone-ash Chlorinated lime, calcium chloride and bromide 

 Sulphurated lime Calcium carbide Analytical reactions and 

 ionic equations for calcium Barium and strontium ; their salts 

 and analytical reactions Radium Summary of analytical 

 characters of the alkaline-earth metals 277-285 



26. Aluminum. Cerium. 



Occurrence in nature Metallic aluminum Alum Alumi- 

 num hydroxide, oxide, sulphate, and chloride Ionic equations 

 Clay Glass Cement Ultramarine Analytical reactions 

 Cerium Summary of Analytical characters of the earth- 

 metals and chromium 285-292 



27. Iron. 



General remarks regarding the metals of the iron group 

 Occurrence in nature Manufacture of Iron Properties 

 Reduced iron Ferrous and ferric oxides, hydroxides, and 

 chlorides Dialyzed iron Ferrous iodide, bromide, sulphide, 



