Ti CONTENTS. 



CHAPTER XII. PAOK 



CHEMISTRY HISTORICAL, GENERAL AND THEORETICAL, , - r ; 101 



CHAPTER XIII. 

 OXYGEN AND COMBUSTION, HYDROGEN AND WATER, . . . lOti 



CHAPTER XIV. 

 NITROGEN, THE AIR, AMMONIA AND NITRIC ACID, . , . 116 



CHAPTER XV. 



CHLORINE, BROMINE, IODINE AND FLUORINE, . . .''. 120 



CHAPTER XVI. 

 DIFFERENT FORMS OF CARBON, SILICON AND BORON, . . . 127 



CHAPTER XVII. 

 SULPHUR, PHOSPHORUS, ARSENIC AND THEIR COMPOUNDS, . . 137 



CHAPTER XVIII. 

 POTASSIUM, SODIUM, LITHIUM AND THEIR COMPOUNDS, . J . 146 



CHAPTER XIX. 

 CALCIUM, BARIUM, STRONTIUM, MAGNESIUM AND ZINC, . . 156 



CHAPTER XX. 

 COPPER, MERCURY, SILVER AND ALUMINIUM, . ... . 158 



CHAPTER XXI. 

 IRON, NICKEL, COBALT, LEAD, TIN, GOLD AND PLATINUM, . . 168 



CHAPTER XXII. 

 ILLUMINATING GAS, ANILINE DYES, RESINS AND GUMS, . . 169 



CHAPTER XXIII. 

 STARCH, SUGAR, ALCOHOL, OILS AND VEGETABLE ACIDS, ... . 175 



CHAPTER XXIV. 

 BOTANY GENERAL AND STRUCTURAL, . ... . . 182 



CHAPTER XXV. 

 BACTERIA, ALGA, FUNGI, SEAWEEDS AND LICHXVI, . . . 190 



