pharetted hydrogen gas. Composition of phosphuretted hydrogen as compared with that of ammonia. Unit-volume weight of phosphorus twice its atomic weight. Liquid and solid phosphuretted hydrogen. Compounds of phosphorus and oxygen. Red oxide of phosphorus. Hypophosphorous acid. Phosphorous acid. Spontaneous combustion. Phosphoric acid. Hydrates of phosphoric acid. Meta- and pyro-phosphoric acids. Chlorides of phosphorus. Dissociation. Chap. XVII. -Arsenic. Sources and properties of arsenic. Arseniu- retted hydrogen. Oxides of arsenic. Manufacture of arsenious acid. Iso- merism. Properties and uses of arsenious acid. Reduction of arsenious acid. Solubility of arsenious acid. Arsenic acid. Salts of arsenic acid; their analogy to the phosphates. Detection of arsenic in cases of poisoning. Diffusion of liquids. Dialysis. Crystalloids and colloids. Destroying the organic matters. Precipitation and reduction of sulphide of arsenic. Marsh's test. Chloride of arsenic. Sulphides of arsenic. Sulphur-salts. Sulpharsenites and Sulphar- Chap. XVIII.-Antimony. Sources, properties, and alloys of antimony. Antimoniuretted hydrogen. Testing for antimony. Distinguishing between arsenic and antimony. Teroxide of antimony. Antimoniate of antimony. An- timonic acid. Metantimonic acid. Chlorides of antimony. Chloridizing agents. Chap. XX.-Carbon. Allotropic modifications of carbon. Graphite or plumbago. Graphitic acid. Gas-carbon. Coke. Anthracite. Charcoal. Preparation of charcoal. Distillation of wood and of coal. Illumi nating gas. Lampblack. Properties of charcoal. Reducing-power of charcoal. Deflagration. Stability of charcoal. Charcoal absorbs gases. Induces combi- nations. Disinfects. Decolorizes. Compounds of carbon and hydrogen. Or- ganic chemistry. Homologous series. Marsh-gas or light carburetted hydrogen. Atomic weight of carbon. Typical hydrogen compounds. Composition of illu- minating gas. Carbonic acid. Preparation and properties of carbonic acid. Ventilation of wells. Diffusion of gases. Solubility of carbonic acid. Carbonic acid produced in the processes of fermentation, respiration, decay, and combus- tion. Liquid and solid carbonic acid. Decomposition, analysis, and synthesis of carbonic acid. Carbonates. Carbonic oxide. Preparation and properties of car- bonic oxide. Carbonic oxide a deoxidizing agent. Heat evolved in the com- bustion of carbonic oxide. Dissociation of carbonic oxide. Composition of car- bonic oxide. Combustion. Luminosity of flames. The Bunsen burner. Quantity and intensity flames. All flames gas-flames. Form of luminous flames. Blast- lamps and blowpipes. Oxidizing and reducing flames. Chimneys. Indestructi- bility of matter. Kindling-temperature. Flames and fires cxtinguished by wire gauze and other good conductors. Safety-lamps. Flaming fires. Loss of heat from incomplete combustion. Chlorides of carbon. Compounds of carbon and Chap. XXI.-Boron. Sources of boron compounds. Allotropism of boron. Boracic acid. Chloride of boron. Fluoride of boron. Fluoboric acid. Sulphide Chap. XXII.-Silicon. Abundance of silicon. Preparation of silicon. Chap. XXIII.-Sodium. Sources of sodium salts. Chloride of sodium. Salt-works. Properties and uses of salt. Bromide and iodide of sodium. Sul- phate of sodium. Glauber's salt. Supersaturated solutions. Bisulphate of so- dium. Carbonate of solium. Leblanc's process. Soda-ash. Soda-crystals. Bicarbonate of so lium. Yeast powders. Sulphides of solium. Metallic sodium. Hydrate of so lium. Caustic soda. Bases and acids. Replacement. Direct com- bination. Phosphates of sodium. Borax. Borax as a blowpipe test. Silicates of sodium. Waterglass. Glass. Devitrified and colored glass. Hyposulphite Chap. XXIV.-Potassium. Sources of potassium. Carbonate of potas- sium. Bicarbonate of potassium. Hydrate of potassium. Caustic potash. Strength of bases. Alkalimetry. Volumetric analysis. Valuation of potash and soda-ash. Metallic potassium. Cream of tartar. Chloride of potassium. Bro- mide of potassium. Iodide of potassium. Cyanide of potassium. Sulphides of potassium. Liver of sulphur. Sulphates of potassium. Nitrate of potassium. Refining of saltpetre. Saltpetre not explosive. Gunpowder. Chlorate of potas- Chap. XXV.-Ammonium-salts. The hypothetical metal ammonium. Chap. XXVI.-Lithium. Spectrum analysis. Rubidium and Casium. 437-443 443-448 Chap. XXVII.-Silver. Occurrence of silver. Chap. XXVIII.-Calcium-Strontium-Barium-Lead. Calcium. Car- 448-466 and barium salts. The calcium group. The alkaline earths.-Lead. Extraction Chap. XXIX.-Magnesium-Zinc-Cadmium. Metallic magnesium. . 501-511 Chap. XXX. -Aluminum-Glucinum-Chromium-Manganese-Iron- copper. Chap. XXXI.-Copper-Mercury. Extraction of copper from its ores. Chap. XXXII.—Titanium. Tin. Its ore. Its extraction and properties. Chap. XXXIII.-Molybdenum. Bisulphide of molybdenum. Oxides 512-561 562-577 577-585 585-587 Chap. XXXIV.-Gold. Its wide diffusion. Its physical properties. In- destructibility of gold. Refining of gold. Chloride of gold. Gilding. Alloys of gold.-Platinum. Chlorides of platinum. Platinum sponge. Platinum black. Chap. XXXV.-Atomic weights and symbols of the elements. Classifica- tion. Natural groups. Atomic heats of the elements. Atomic heats of compounds. Appendix.-Glass tubing. Cutting and cracking glass. Bending, drawing, and closing glass tubes. Blowing bulbs. Lamps. Blast-lamps and blowers. Caoutchouc stoppers, tubing, and sheets. Corks. Cork-cutters. Putting tubes through corks. Supports for vessels-iron stand, sand-bath, wire gauze. Pneu- matic trough. Collecting gases. Safety-tubes. Gas-holders. Deflagrating- spoons. Platinum foil and wire. Filtering. Filters. Drying of gases. Drying- tubes. Chloride-of-calcium tubes Spring clip. Screw compressor. Water- bath. Iron retort. Self-regulating gas-generator. Glass retorts. Flasks. Beakers. Test-tubes. Test-glasses. Measuring-glasses. Burettes. Reading-off Burettes. Pipettes. Wash-bottle. Porcelain dishes and crucibles. Rings to support round- bottomed vessels. Crucibles. Tongs. Pincers. Mortars. Spatula. Thermome- ters. Furnaces. The metrical system of weights and measures. Table for the conversion of degrees of the centigrade thermometer into degrees of Fahrenheit's thermometer. Table for the conversion of grammes into grains, and centimetres EMENDATIONS TO BE MADE IN THE TEXT. Page 2, line 25. Strike out the words "both copper and sulphur have disappeared," and insert the words, "it suddenly glows vividly, at the instant when the copper and sulphur combine." Page 16, line 11. Insert after the word "air," the words " See Appendix, Fig. XVII.” Page 61, line 3 from foot. Add the words "See Appendix, § 17." Page 173, Exp. 94. Instead of the first sentence (three and a half lines) substitute the following: "Mix 75 or 100 grms. of flowers of sulphur and an equal weight of slaked lime. Heat half a litre of water in a capacious flask until it boils vigorously. Pour the mixture of lime and sulphur into the water, little by little, slowly enough not check the boiling. The movement of ebullition prevents the solid matter from becoming impacted upon the flask." Page 255, line 23. Strike out the words "consists of" and insert "may be made by folding a circular piece of parchment paper into the form of a cone, like the filter represented in Fig. XX. of the Appendix, and cementing the upper edges of the paper with a drop of a thick solution of shellac in alcohol. When nearly filled with the liquid to be dialyzed and placed in a tumbler of water, the cone floats upright and presents a large surface for the diffusion of the liquids. A more elaborate form of dialyzer may be made with " Page 267, line 6 from foot. ule," insert the words " space Page 267, line 12 from foot. Between the words "the" and " glob about." Strike out the words "Chapter XX,” and insert "§ 431 and Exp. 220." Page 498, lines 12 After the word "lamp," insert "see Exp. 193." Insert after "sodium," the words "in bleaching." SbS," read "Sb2O5" Page 518, line 20. Strike out the words "is still," and insert " was until lately." Page 518, line 21. Page 518, line 22. Strike out the words "in Europe." Strike out the word "there." |