CHEMISTRY. 



71 



sodium for phosphorus in lucif er matches, 88 ; 

 ozone and sea-phosphorescence, 88 ; absorption 

 of gases by charcoal, 89 ; new explosive pow- 

 ders, 89 ; prevention of nitroglycerine explo- 

 sions, 90; the aniline colors, 90; artificially- 

 colored wines, 90; lowering of temperatures 

 in saline solutions, 91 ; recovery of sulphur 

 from alkali waste, 91 ; reduction of oxides by 

 hydrogen, 92 ; new method of extracting io- 

 dine, 92 ; crystallization of metallic oxides, 92 ; 

 protection of woodwork from fire, 93 ; decom- 

 position by sunlight, 93 ; hydro-fluoric acid, 93 ; 

 analysis of varieties of carbon, 94; ignition- 

 point of vapors, 94 ; nitrification, 94 ; unwhole- 

 some food, 95; purifying water by chemical 

 ingredients, 96 ; phosphates in w*heat, 96. 



X. Atomic theory, Sir William Thompson 

 on, 84 ; defends Caudry's proposition, 84 ; cites 

 Kinetic theory of gases, 86 ; refers to experi- 

 ments of De la Tour, Faraday, and others, 86 ; 

 address of Prof. H. E. Eoscoe before British 

 Association, 86; hydrogenium amalgam, 87; 

 constitution of ammonium amalgam, 87; re- 

 searches on vanadium, 88 ; no such element as 

 jargonium, 88 ; ozone, 89 ; chemical action of 

 sunlight, 89 ; artificial gems, 90 ; mineral crys- 

 tallization by cold, 90; chlorine as a refining 

 agent, 90 ; anhydrous fluoride of silver, 91 ; 

 artificial alizarine, 91 ; paper on, by J. W. 

 Young, 91 ; use of, as dye-stuff, 92 ; new ex- 

 plosive powders, 92 ; " safety explosive com- 

 pound " of Percy A. Blake, 92 ; varieties pat- 

 ented by Nobel, 92 ; invention of the Nora- 

 Gyttorp mills in Sweden, 93 ; chemical changes 

 of hides into leather, 93 ; preparation of an- 

 thracen, 93 ; improved method of making lead- 

 paints, 94 ; manufacture of sulphide of carbon, 

 94 ; gas-furnace for chemical operations, 95 ; 

 composition of iron-rust, 95 ; presence of car- 

 bonic acid in atmosphere, 95 ; cause of, 95 ; 

 analysis of ooze or chalk-mud, 95 ; new vola- 

 tile and saccharine substance, 96 ; soluble glass, 

 96; analysis of soot, 96; exportation of, to 

 West Indies, 96 ; uses of glycerine, 97 ; utili- 

 zation of sewage, 97 ; relative purity of air, 97 ; 

 poisonous cosmetics, 98; adulterated aniline 

 dyes, 98 ; test as to the adulteration of milk, 98. 



XI. Gaseous and liquid forms of matter, 

 105 ; a law of chemical dynamics, 106 ; heat in 

 chemical combinations, 106 ; ozone and hy- 

 giene, 107; indigotine, 107; new coloring sub- 

 stances, 108 ; artificial bases, 108 ; new bases, 

 108; pyrene, 108; iodo-sulphates, 108, 109; 



spontaneous explosive, 109 ; dynamite, 109 ; 

 lithofracteur, 109 ; delicate test for nitric acid, 

 110; spectroscope in chemical analysis, 110; 

 candy adulterations experiments of New York 

 Health Department, 110; utilizing gas-lime, 

 110 ; phosphate process for utilizing sewage, 

 111 ; changes of color produced by cold, 111 ; 

 coloring matter in foliage, 112; fluorescent 

 solution?, 112; ammonium amalgam contro- 

 versy, 113 ; sulphur in illuminating gas, 113 ; 

 chemistry of tobacco - smoke, 113; Chinese 

 varnish, 113 ; etching on glass, 113 ; chloralum, 

 113; tests for alum in bread, 114; cheap hy- 

 drogen, 114 ; new chlorine process, 114, 115. 



XII. Ozone, 90 ; fluorescence, 91 ; atoms 

 and molecules, 91 ; atomic weights, 91 ; atomic 

 volume, 91 ; atomic heat, 91 ; molecules, 91 ; 

 atomic combining capacity, 91 ; isomerism, 91 ; 

 homogeneity, 91 ; use of carbolic acid, 92 ; the 

 prevention of putrefaction, 92 ; substances ex- 

 perimented upon, 92; preservation of meat 

 and vegetables, 93 ; cheap saline disinfectants, 

 93 ; arsenic in paper-hangings, 93 ; logwood 

 test for alum in bread, 94 ; aniline colors, 94 ; 

 platinum -black, 95 ; commercial chloral, 95 ; 

 artificial butter, 96 ; new method of obtaining 

 potassium, 96; researches on alcoholic fer- 

 mentation, 96; distillation by cold, 96; im- 

 proved carbonate of potash, 97 ; nitrification, 

 97; iron in the blood, 97; the explosion of 

 detonating compounds, 98 ; experiments there- 

 on, 98 ; newly-found substances, 98. 



XIII. Composition of the sun, 99; iron 

 electrotypes, 100; noctilucine, 100; decom- 

 position of explosives and the phenomena of 

 supersaturation, 101 ; action of water on lead, 

 102; phenolcyanine, 102; alcohol in bread, 

 103; examination of blood-stains, 103 ; ozone, 

 104 ; new ozone generator, 104; gas manufact- 

 ure, 105 ; indigo dyeing and printing, 105 ; 

 silicic alcohols, 106; new aniline color, 107; 

 passage of gases through vegetable colloid mem- 

 branes, 107; antimony terchloride as a re- 

 agent for oils, 107; soda manufacture, 108; 

 decomposing action of light, 108; suint, 109. 



XIV. Influence of color on reduction by 

 light, 105 ; the Centennial of Chemistry, 106 ; 

 cbmposition of Great Salt Lake water, 106; 

 agricultural chemistry, 107 ; phosphoric acid in 

 superphosphates, 107 ; nitre-producing plants, 

 107; nitrogen of the soil, 107; nitrates in po- 

 table water, 108 ; carbonic acid in the air, 108 ; 

 composition of cosmic dust, 108 ; improved 



