CONTENTS.
xxv
Art.
Page
Electromotive force between bodies in contact.
246. Volta's law of the contact force between different metals at the same temperature
299
247. Effects of electrolytes
300
248. Thomson's voltaic current in which gravity performs the part of chemical action
300
249. Peltier's phenomenon. Deduction of the thermoelectric electromotive force at a junction
300
250. Seebeck's discovery of thermoelectric currents
302
251. Magnus's law of a circuit of one metal
302
252. Cumming's discovery of thermoelectric inversions
304
253. Thomson's deductions from these facts, and discovery of the reversible thermal effects of electric currents in copper and in iron
304
254. Tait's law of the electromotive force of a thermoelectric pair
305
Electrolysis.
255. Faraday's law of electrochemical equivalents
307
256. Clausius's theory of molecular agitation
309
257. Electrolytic polarization
309
258. Test of an electrolyte by polarization
310
259. Difficulties in the theory of electrolysis
310
260. Molecular charges
311
261. Secondary actions observed in the electrodes
313
262. Conversation of energy in electrolysis
315
263. Measurement of chemical affinity as an electromotive force
316
Electrolytic polarization.
264. Difficulties of applying Ohm's law to electrolytes
318
265. Ohm's law nevertheless applicable
318
266. The effect of polarization distinguished from that of resistance
318
267. Polarization due to the presence of the ions at the electrodes. The ions not in a free state
319
268. Relation between the electromotive force of polarization and the states of the ions at the electrodes
320
