70 



CHEMISTRY. 



of aluminium bronze, 180 ; paints from iron 

 slag, 181 ; silvering cloth, 181 ; rendering fab- 

 rics non-inflammable, 181; caustic soap for 

 cleaning flax, 181 ; concentration of water by 

 freezing, 181 ; manufacture of ice, 182 ; pro- 

 tection of skins and furs from vermin, 182 ; 

 gold rubber plates for artificial teeth, 182. 



V. Elements, 143; allotropic states, 143, 

 144 ; allotropic conditions of iron, 143 ; allo- 

 tropic silicium and carbon in cast-iron, 143; 

 an application of plastic sulphur, 144; com- 

 pounds, 144-146 ; solubility of gold in acids, 

 144 ; new nitrogen compounds, 143 ; new com- 

 pounds, 144; new compounds, apparently al- 

 lied to ammonia, 144 ; solution of metallic ox- 

 ides in fused caustic alkalies, 144; properties 

 of liquefied carbonic acid, 144 ; properties of 

 liquefied hydrochloric acid gas, 145 ; synthesis 

 of organic compounds, 145 ; acetic and caproic 

 acids, 146 ; substitutions among alcohol radi- 

 cals, in their compounds, 146 ; physico-chemical 

 phenomena and principles, 146-148 ; perme- 

 ability of heated metals to gases, 146 ; dissocia- 

 tion of elements of compound bodies by heat, 

 146 ; crystallogenic force, 147 ; beautiful arbo- 

 rizations, 147; mineral arborizations in solu- 

 tions of alkaline silicates, 148 ; efflorescence of 

 crystals, 148 ; theoretical chemistry, 148-150 ; 

 saturability as distinct from equivalency, 148 ; 

 mechanical energy of chemical action, 149; 

 constitution of ammonium amalgam, 150 ; ap- 

 plications of chemistry, 150-155 ; processes for 

 obtaining oxygen, 150, 151 ; extracting iodine, 

 151 ; nitrogen, etc., 151 ; electro-chemical sep- 

 aration of metalloids, 151 ; a very sensitive re- 

 action for iron, 151 ; Ozouf s process for car- 

 bonic acid, 152; Ozouf s process for white 

 lead, 152 ; preparation of potash, 152 ; prepa- 

 ration of nitre, 152 ; preparation of alum, 152 ; 

 detection of explosive gases in mines, 152, 153 ; 

 applications of bisulphide of carbon, 153 ; ex- 

 traction of vegetable oils by means of volatile 

 hydrocarbons, 153 ; preparation of clay with 

 glycerine, for modelling, 153 ; linoleum and its 

 applications, 154; aniline black, 154; new sol- 

 vent, for aniline dyes, 154, 155 ; reviving the 

 writing of old documents, 155 ; Smithsonian In- 

 stitution, 155; recent publications and papers, 

 155, 156 ; new works on chemistry, 156. 



VI. Progress of the year, 94; new ele- 

 ments, 94 ; a single primary element, 95 ; new 

 class of compound metallic radicals, 95 ; a new 

 alcohol, 95 ; ozone, 96 ; isomerism, 96 ; source 



of muscular power, 96; the sulphides, 97; 

 some properties of the chloride of sulphur, 98; 

 bichloride of carbon, 98; new variety of phos- 

 phorus, 98; natural and artificial production 

 of the diamond, 98 ; ammonium amalgam, 99 ; 

 new aniline colors, 99 ; detection of chloride, 

 etc., by means of the spectroscope, 99 ; lime 

 crucibles for great heats, 100 ; works and pa- 

 pers on chemical subjects, 100. 



VII. Progress in applied chemistry, 108; 

 new facts brought to light, 104; new chemical 

 calculus, 104; discussions concerning atoms, 

 104; determination of atomic weights, 105; 

 constitution of fluorine compounds, 105 ; com- 

 position of organic compounds, 106 ; chemistry 

 and vegetation, 106 ; proportion of carbonic 

 acid in different places, 107; experiments in 

 crystallization, 107, 108; crystallized substances 

 from the brain, 108; specific gravity of vapors 

 and gases, 108 ; aniline colors, 108, 109 ; new 

 products of coal-tar, 109 ; gun-cotton and ex- 

 plosive compounds, 109, 110; new process for 

 obtaining oxygen or chlorine, 110; the cya- 

 nides, 110, 111 ; antiseptic properties of the 

 sulphites, 111 ; adamantine anthracite carbon, 

 111 ; new applications of bisulphide of carbon, 

 112 ; graphitoidal boron, 112 ; pure hydrate of 

 sodium, 112; adulterations in coffee, 113; the 

 Akazga poison, 118; works and memoirs, 114. 



VIII. Artificial formation of organic sub- 

 stances, 99; fermentation and the source of 

 muscular power, 100 ; the occlusiou of hydro- 

 gen gas by metals, 100; the velocity of chem- 

 ical changes, 101 ; Tyndall on molecular force, 

 102; action of light, 102; white gunpowder, 

 103 ; nitroglucose, 103 ; ozone and antozone, 

 104; microscopic crystallography, 104; crys- 

 tallization of sulphur, 105 ; do. under the blow- 

 pipe, 105; industrial preparation of oxygen, 

 106; oxychloride of silicium, 106; iodide of 

 Bilicium, 106; persulphide of hydrogen, 107; 

 new method of sugar manufacture, 107; analy- 

 sis of British waters, 107; carbon tubes and 

 crucibles, 108. 



IX. A new fluorescent substance, 84 ; am- 

 monium alloys and nascent-hydrogen tests, 84; 

 experiments upon the ammonium amalgam, 85 ; 

 jargonium, ,.a new element, 85; apomorphia, 

 86 ; artificial production of Alizarin, 86 ; arti- 

 ficial production of ice, 86 ; new chrome green, 

 87; new method of obtaining oxygen, 87; 

 manufacture of oxygen on the large scale, 87 ; 

 sulphide-of-carbon light, 88; substitution of 



