CONTENTS INTRODUCTION 1. EXPERIMENTS TO DETERMINE AN UPPER LIMIT TO THE KINETIC ENERGY OF AN ELECTRIC CURRENT [i], 1880 2. ON INDUCTION IN ROTATING SPHERES, 1880 PAGE ix 1 35 3. ON THE DISTRIBUTION OF ELECTRICITY OVER THE SURFACE OF MOVING CONDUCTORS, 1881 · 127 • 4. UPPER LIMIT FOR THE KINETIC ENERGY OF ELECTRICITY IN MOTION [ii], 1881 137 5. ON THE CONTACT OF ELASTIC SOLIDS, 1881. 146 6. ON THE CONTACT OF RIGID ELASTIC SOLIDS AND ON HARDNESS, 1882. 163 7. ON A NEW HYGROMETER, 1882 184 • 8. ON THE EVAPORATION OF LIQUIDS, AND ESPECIALLY OF MERCURY, IN VACUO, 1882 186 • 200 9. ON THE PRESSURE OF SATURATED MERCURY-VAPOUR, 1882 10. ON THE CONTINUOUS CURRENTS WHICH THE TIDAL ACTION OF THE HEAVENLY BODIES MUST PRODUCE IN THE OCEAN, 1883 207 11. HOT-WIRE AMMETER OF SMALL RESISTANCE AND NEGLIGIBLE INDUCTANCE, 1883 . 211 12. ON A PHENOMENON WHICH ACCOMPANIES THE ELECTRIC DISCHARGE, 1883. 216 13. EXPERIMENTS ON THE CATHODE DISCHARGE, 1883 224 14. ON THE BEHAVIOUR OF BENZENE WITH RESPECT TO INSULATION AND RESIDUAL CHARGE, 1883 255 15. ON THE DISTRIBUTION OF STRESS IN AN ELASTIC RIGHT CIRCULAR CYLINDER 1884 261