306 Notices respecting New Books. 



Electrical machines. Theory of the electrical machine. Quadrant elec- 

 trometer. Various modes of excitation. Excitation by induction. Theory 

 of the prime conductor. Tlieory of the gold-leaf electroscope. Doublers 

 and condensers. Construction and theory of the Leyden jar. Electro- 

 phorus of Volta. Induction an action of contiguous particles. Specific 

 inductive capacity. Lateral inductive action. Difference between con- 

 ducting and non-conducting bodies. Relation of induction to conduction. 

 Other sources of statical excitation. Atmospheric electricity. 



Sect. II. Of Dt/namical Electriciti/. — Magnetic electricity, thermo- 

 electricity, chemical electricity, animal electricity. Galvanic electricity. 

 Conditions of the generation of a galvanic current. Simple galvanic cir- 

 cles. Connexion of galvanic and chemical action. The direction of the 

 current determined by the chemical action. Principle of electrotype 

 copying. Compound voltaic circles. Theory of the voltaic battery. 

 Relation of intensity and quantity. Statical action of the battery. 

 Volta's theory of contact. Chemical theory of the battery. Various 

 forms of galvanic batteries. Interfering action of common zinc. Amal- 

 gamation of zinc plates. Forms of constant batteries by MuUins, Daniell 

 and Grove, Relative conducting powers of bodies for voltaic electricity. 

 First discovery of galvanism. Various kinds of galvanoscopes. Thermo- 

 electricity. Thermo-electric currents. Production of cold by electricity. 

 Construction of the thermo-multiplier of Nobili. Magnetic electricity. 

 Magnetism a form of electricity. Magnetic properties of iron and 

 steel. Magnetic attraction and repulsion. Intimate structure of magnets. 

 Magnetic properties of a galvanic current. Attraction and repulsion of 

 currents. Electro-vmgnetism. Action of a galvanic current on a magnet. 

 Astatic combinations of magnets. Construction of the galvanometer. 

 Magneto-electric induction. 



Chapter V. — Of Chemical Nomenclature. — Table of simple bodies 

 and their symbols. General principles of the Lavoisierian nomenclature. 

 Construction of the names of simple bodies and primary compounds. 

 Construction of the names of various classes of primary compounds. 

 Names of secondary compounds. Ternary and quaternary compounds. 

 Symbolical nomenclature. 



Chapter VI. — Of Chemical Affinity, and its relations to Heat, 

 TO Light, and to Cohesion. — Nature of chemical affinity. Principles of 

 elective decomposition as characteristic of chemical affinity. Order of 

 elective decomposition. Of double decomposition. Of quiescent and di- 

 vellent forces. Order of affinity not constant. The power of affinity in- 

 fluenced by external modifying causes. Characteristic distinctions be- 

 tween affinity and cohesion. Diversity of chemical properties equally a 

 cause and an effect of chemical action. Influence of external physical 

 agents upon chemical affinity. 1. Influence of cohesion. Influence of 

 cohesion on the order of chemical decomposition. Mode of arrangement 

 of acids and bases which co-exist in solution. Distribution not invariable. 

 2. Influence of elasticity. Change in the order of decomposition produced 

 by cohesion and elasticity. Change in the order of decomposition pro- 

 duced by various modifying causes. Relation of affinity to neutralizing 

 power. Influence of light on chemical affinity. Photographic drawing. 

 Colouring effects of the chemical rays. Interference of the chemical rays. 

 Theory of the formation of Daguerreotype images. 



Chapter VII. — Of the Light and Heat disengaged during Chemi- 

 cal Combination. — Nature of combustion. Products of slow combustion. 

 Aphlogistic lamp. Action of spongy platina on gaseous mixtures. Con- 

 struction of the platina gas-lamp. Constitution of flame. Blowpipe. 

 Heating effects of flame. Cooling effects of apertures. Construction of the 



