Calendar: 1872-1873 Page 292

EVENING CLASSES 291 Nomenclature -Acids bases and salts The preparation properties and natural occurrence of the following substances and their most characteristic compounds together with their useful application monads Hydrogen -Manipulation with gases-Gaseous diifu- sion Chlorine Bromine and Iodine Commonly called Halogens or Salt-producers-Liquefaction of gases-Com- pounds with hydrogen-Molecules and Atoms-Bleaching -Chemical activity of this element Fluorine -Glass etching dyads Oxygen -The Atmosphere-Combustion -Allotropy- Ozone and Oxygen-Water in the solid liquid and gaseous states-Specific and Latent Heat-Natural Waters and their Impurities Of hydrates Hydrogen peroxide Oxygen compounds of the Halogens-Oxides Sulphur -Octahedral Prismatic and Plastic varieties- Electro-positive and Electro-negative kinds-Sulphides and Poly sulphides-Sulphurous Acid-Manufacture of Sulphuric Acid-Sulphites and Sulphates Selenium Tellurium triads Nitrogen -Ammonia-Ammonium theory-The crystal- line Ammoniates-The Chlorides and Iodides of Nitrogen- The Oxides of Nitrogen-The Nitrogen Acids-Nitrites and Nitrates Phosphorus Arsenic and Antimony -The Hydrides Chlorides Oxides and Sulphides The three Phosphoric Acids-The effect of these substances on Alloys-Phos- phates Τ