194 



INDEX. 



coveries 22, 23, 42, 56, 76, 87, 88, 109 : 

 extract from his "Experimental 

 Researches," 189. 



Faraday, F. J., 189 



Force, not destructible, 88 ; destruc- 

 tible and indestructible, Roget's and 

 Faraday's views, 187. See also Living 

 Force. 



Friction, heat produced by, 71. 



Galvanometer, Joule's improvement, 



Gases, dynamical theory of, 112 ; their 



kinetic constitution, 95. 

 Graham's researches on the properties 



of gases, 95. 

 Gravitation as a property of matter, 3. 

 Gravity, specific, researches on, 102. 

 Great Eastern steamship, launch of, 



147. 



Heat, Living Force, and Matter, 

 Joule's Lecture, 2 ; living force con- 

 vertible into heat, 9 : equivalency to 

 mechanical power, 10 ; not a sub- 

 stance, 13 ; absorbed during change 

 from solid to liquid, 15 : growth of 

 ideas concerning, 18 ; conversion into 

 mechanical effect, Seguin, Mayer, 

 and Colding's suggestions, 21 : equi- 

 valent of electric action, 47; in 

 metallic conductors, 47 ; developed 

 during electrolysis, 48 ; electric origin 

 of, 49; equality of heats resulting 

 from combustion and electrolysis, 

 51; discrepancies between, 53: gene- 

 rated or transferred, 60 ; means of 

 destroying, 64; mechanical value, 

 65 ; conversion into power, 69 ; pro- 

 duced by friction, 71 ; temperature 

 in relation to, 79 : latent, 83 ; dyna- 

 mical theory of, S6 ; indestructibility 

 of, 91 ; of gases, 113 ; inconvertibility 

 maintained by Sir TVm. Thomson, 

 117 ; Rankine on the Mechanical 

 Action of H eat, 123 : Clausius on 

 the same, 128 : historic sketch of 

 researches on, 133 ; further electrical 

 experiments, 151 ; Joule's last ex- 

 periments, 163 ; development of the 

 knowledge of, 173 : Black's dis- 

 coveries," 174; Hooke's vibratory 

 theory, 177 

 Herepath's theory of Gases. 112 

 Him, Gustave-Adolphe, experiments 



on the friction of water, 152, 164 

 Holmfirfch Eeservoir disaster, 142 

 Hooke, Robert, \ ibratory theory of 

 heat and light, 177 



Horse, duty per grain of food, 101 



Inertia as a property of matter, 4 

 Iron, resistance to induction of mag- 

 netism, 36 ; effect of magnetism on, 

 102 ; action of cold on, 157 



Jacobi, Prof., discoverer of internal 

 magnetic resistance, 10 



Johnson, W. H., Portrait of E. W. 

 Binney, 166 



Joule, B\'St. J. B., diary of, 26: taste 

 for music, 31 ; marriage, 32 ; describes 

 the Holmfirth Reservoir disaster, 

 112 ; railway accident, 147 : stoppage 

 of his brother's experiments, 148, 150 ; 

 illness of J. P. Joule, 161 



Joule, James Prescott, discoverer of 

 the law of conservation of energy, 2 ; 

 Lecture on Matter, Living Force and 

 Heat, 2; birth. 25; studies chemistry 

 under Dalton, 27 : influence of Dalton 

 on his work, 28 ; visits the Lake Dis- 

 trict, 29 ; chemistry lessons from 

 John Davies, 30 ; accident with fire- 

 arms, 31 ; First Research, papers 

 in "Sturgeon's Annals of Elec- 

 tricity, " 33 ; improves electro-mag- 

 nets, 34; measures work, 35; finds 

 speed limited, 36 : standard galva- 

 nometer and law of electro-magnetic 

 attraction, 37 — 33 : mechanical 

 equivalents of electric and chemical 

 actions, 40 ; absolute units, 41 ; eco- 

 nomic possibilities of the electro- 

 motor, 43; Second Research, 55; 

 communication to the Royal Society, 

 55; motive, 46: "Heat evolved in 

 metallic conductors," 47; heat equi- 

 valent of electric action, 47 ; heat 

 developed during electrolysis, 49; 

 heats of combustion and electrolysis, 

 50 ; heat dependent on the state of 

 the elements, 51 ; first paper before 

 the Society, elected member, 53; 

 research with Dr. Scoresby, 55 ; heat 

 evolved during electrolysis of water, 

 heat to give oxygen the gaseous state, 

 55; heat evolved by mechanical 

 condensation of oxygen gas, 56 ; 

 mechanical, chemical, and thermal 

 equivalents of electro action, 57 ; 

 Third Research, 59 ; heat generated 

 not transferred, 61; "Mechanical 

 value of heat." first determination, 

 66 ; meeting of British Association at 

 Cork, 67; mechanical equivalent by 

 friction, 71 ; generalisation, 72 ; 

 efforts to convince the scientific 



