Calendar: 1874-1875 Page 299

EVENING CLASSES 297 Elements -Chemical Compounds-Mechanical Mixtures- Combining proportions or atomic weights-Quantivalence- Use of Symbols-Classification of Compounds and Elements according to their chemical behaviour Nomenclature -Acids Bases and Salts The preparation properties and natural occurrence of the following substances and their most characteristic compounds together with their application to the useful arts monads Hydrogen -Manipulation with Gases-Gaseous Diffu- sion-Hydrogen in tbe Nascent state-Reducing Action Chlorine Bromine and Iodine Commonly called Halogens or Salt-producers-Liquefaction of Gases-Com- pounds with Hydrogen-Molecules and Atoms-Bleaching -Relative Chemical Activity of these Elements Fluorine -Glass Etching with Hydro-fluoric Acid diads 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 Polysulphides-Sulphurous Acid-Manufacture of Sulphuric Acid-Sulphites and Sulphates Selenium Tellurium triads Nitrogen -Ammonia-Dissociation-Ammonium theory -The crystalline Ammoniates-The Chlorides and Iodides of Nitrogen-The Oxides of Nitrogen-The Nitrogen Acids -Nitrites and Nitrates