Polarisation, 1. Cause of polarisation, 2. The electrolytic decomposition of water, 2. Electrolysis of salts of the heavy metals, 3. Primary and secondary electrolysis, 3. Ions, 4. Coulomb, 4. Ampere, 4. Ohm, 4. Unit of conductivity, 4. The absolute systems, 4. Ohm's law, Volt, 5. Potential, 5. Fall of potential, 6. Current density, 7. Electrochemical equivalents, 7. Atomic weight, 8. Gram-equivalent, 9. Gram-molecule, 9. Concentration, 10. Temperature, 10. Mechanical work, 11. Effect, 11. Work done by change of volume, 12. Work done by evolution of a gas under constant pressure, 12. Expansion of gases by heat at constant pressure, 14. Expansion of gases at constant temperature, 14.

The first electrochemical investigations, 16. Galvani and Volta, 17. Berselius's investigations, 18. Davy's electrochemical theory, 18. Berzelius's theory, 19. The Grotthuss chain, 21. Ampère's theory, 21. Faraday's law, 22. Hittorf's investigation, 22. Helmholtz's Faraday lecture, 22.

Boyle's law, 25. Gay-Lussac's law, 25. Avogadro's law, 25. Jiaw of van der Waals, 26. Isotonic solutions, 27. Semi-permeable membranes, 28. Osmotic pressure, 28. Osmotic pressure of gases, 31. Osmotic experiments with liquids, 32. Nature of osmotic pressure, 33. Physiological