CONTENTS. 



vn 



15. Phosphorus. 



Occurrence in nature Manufacture, properties, and modi- 

 ficationsPoisonous properties and detection in cases of 

 poisoning Oxides of phosphorus Phosphorous acid; tests for 

 it Metaphosphoric, pyrophosphoric, orthophosphoric acids ; 

 tests for them Hypophosphorous acid ; tests for it Hydrogen 

 phosphide 109-117 



16. Chlorine. 



Haloids or halogens Preparation and properties of chlorine 

 Chlorine water Hydrochloric acid; tests for it Nitro- 

 hydrochloric acid Compounds of chlorine with oxygen 

 Hypochlorous acid Chloric acid ; tests for it . . . . 117-123 



17. Bromine. Iodine. Fluorine. 



Bromine Hydrobromie* acid Tests for bromides Hypo- 

 bromic and bromic acid Iodine Hydriodic acid Tests for 

 iodine and iodides Fluorine Hydrofluoric acid . . . 123-128 



IV. 



METALS AND THEIR COMBINATIONS. 



18. 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 129-134 



19. Potassium. 



General remarks regarding the alkali metals Occurrence in 

 nature Potassium hydroxide, carbonate, bicarbonate, nitrate, 

 chlorate, sulphate, sulphite, hyposulphite, iodide, bromide 

 Analytical reactions 134-141 



20. Sodium. 



Occurrence in nature Sodium hydroxide, chloride, car- 

 bonate, bicarbonate, sulphate, sulphite, thiosulphate, phos- 

 phate, nitrate, borate Analytical reactions Lithium . . 141-146 



21. Ammonium. 



General remarks Ammonium chloride, carbonate, sulphate, 

 nitrate, phophate, iodide, bromide, and sulphide Analytical 

 reactions Summary of analytical characters of the alkali- 

 metals 146-149 



22. Magnesium. 



General remarks Occurrence in nature Metallic mag- 

 nesium Magnesium carbonate, oxide, sulphate, sulphite 

 Analytical reactions ......... 150-152 



