Chapter III.
Electromotive force between bodies in contact.
Art.
246. Volta's law of the contact force between different metals at the same temperature.
247. Effects of electrolytes
248. Thomson's voltaic current in which gravity performs the part of chemical action
249. Peltier's phenomenon. Deduction of the thermoelectric electromotive force at a junction
250. Seebeck's discovery of thermoelectric currents.
251. Magnus's law of a circuit of one metal
252. Cumming's discovery of thermoelectric inversions
253. Thomson's deductions from these facts, and discovery of the reversible thermal effects of electric currents in copper and in iron
254. Tait's law of the electromotive force of a thermoelectric pair
Chapter IV.
Electrolysis
255. Faraday's law of electrochemical equivalents
256. Clausius's theory of molecular agitation
257. Electrolytic polarization
258. Test of an electrolyte by polarization
259. Difficulties in the theory of electrolysis
260. Molecular charges
261. Secondary actions observed in the electrodes
262. Conversation of energy in electrolysis
263. Measurement of chemical affinity as an electromotive force
Chapter V.
Electrolytic polarization
264. Difficulties of applying Ohm's law to electrolytes.
265. Ohm's law nevertheless applicable
266. The effect of polarization distinguished from that of resistance
267. Polarization due to the presence of the ions at the electrodes. The ions not in a free state
268. Relation between the electromotive force of polarization and the states of the ions at the electrodes
