INDEX. 



195 



world, 74; papers on "The inter- 

 mittent character of the Voltaic 

 current in certain cases of electro- 

 lysis," and on "The changes of 

 temperature produced by the rare- 

 faction and condensation of air," 78; 

 skill in thermometry, 81 ; experi- 

 ments on latent heat, 83 ; new theory 

 of the Steam Engine, 88 ; his know- 

 ledge of mechanical philosophy, 94 ; 

 hypothesis of whirling atmospheres, 

 95 ; discovers the absolute zero of 

 temperature, 96; letter to "Philo- 

 sophical Magazine," 97; definition 

 of gaseous hypothesis, 98 ; visits Dr. 

 Scoresby, 99 ; paper on " Mechanical 

 Powers of electro-magnetism, steam 

 and horses," 99 ; essay for the Insti- 

 tute of France, 101 ; research with Sir 

 Lyon Playfair, 102 ; appointed Secre- 

 tary to the Manchester Literary and 

 Philosophical Society, 103 ; Lecture 

 on "Matter, Living Force, and 

 Heat," 104; explanation of shooting 

 stars, 105; paper accepted by the 

 Institute of France, 107 ; meets Sir 

 William Thomson at Oxford, 108; 

 marriage August, 1847, 109, 110 ; ex- 

 periments on gases, 112; his con- 

 clusions accepted by Sir W. Thom- 

 son, 119 ; and by Rankine, 127 ; final 

 determination of mechanical equiva- 

 lent of heat, 131 ; historic sketch of 

 researches on heat, 133; elected 

 Fellow of the Royal Society, 136 ; 

 investigates amalgams, 138 ; invents 

 hot-air engine, 138 ; joint investiga- 

 tion on gases with Sir William 

 Thomson, 139 ; elected a Vice-Presi- 

 dent of Manchester Literary and 

 Philosophical Society, 141 ; death of 

 his wife, 142 ; honours conferred on 

 him, 143, 156, 166; invents process 

 of welding metals by electric current, 

 144 ; researches on solids and liquids, 

 145 ; elected on the Council of the 

 Royal Society, 147 ; railway acci- 

 dent, 147 ; experiments on condensa- 

 tion of steam, 149 ; elected President 

 of Manchester Literary and Philo- 

 sophical Society, 150; death of his 

 younger brother, 151 ; portrait by 

 Patten, 151 ; description of him by 

 the author, 154 ; receives the Copley 

 medal, 156 ; papers on action of cold 

 on iron and steel, 157 ; displays his 

 character, 158 ; elected President of 

 British Association for 1873, 160; 

 first failure of health, 160; last 



experiments on heat, 163; Royal 

 pension, 166 ; publication of his col- 

 lected writings, 166 ; last paper to 

 the Manchester Literary and Philo- 

 sophical Society, 168; portrait by 

 Collier, 168; death, 169; memorial 

 statue in Manchester, 171 ; tablet in 

 Westminster Abbey, 171. 



Laplace's Theory of the Velocity of 

 Sound, 106. 



Lavoisier invents the term " Caloric," 

 175; Extracts from his " Traite 

 Elementaire de Chemie," 185. 



Light, Hooke's Vibratory Theory^ 177. 



Literary and Philosophical Society. 

 See Manchester. 



Living Force, Matter and Heat, 

 Joule's Lecture, 2 ; Law of Velocity, 

 5 ; transference of, 6 ; not anni- 

 hilated by friction, 8; heat, its 

 equivalent when apparently des- 

 troyed, 8. 



Locomotive Engine, 21. 



Magnetism, effect on iron and steel, 

 101. 



Magneto-electrical Heat, Researches 

 on, 61 ; Laws of, 63. 



Magnets, Experiments on, 35, 36, 168; 

 maximum power of, 43. _ 



Majocci's opinion on Gravitation, 3. 



Manchester Courier, May 5th, 1847, 

 Joule's Lecture, 104. 



Manchester Literary and Philo- 

 sophical Society, 27, 53, 55, 59, 77, 

 136, 138, 141, 145, 150, 156, 159, 168, 

 170, 172. 



Manchester Meeting of British Asso- 

 ciation, 53. 



Manchester, Victoria University, 166. 



Mann, Dr. Dixon, attends Joule in 

 illness, 162. 



Mark, Aid. John, 171. 



Matter, Joule's Lecture on, 2. 



Mayer, M., suggestions on the conver- 

 sion of heat, 21 ; proof of converti- 

 bility of heat into work, 86 ; experi- 

 ments on temperature of water, 133. 



Mechanical foundation of Physical 

 Science, 2; equivalent of electric 

 effect, 40. 



Metals, welding by electric current, 

 144 



" Micrographia," Hooke's, Extracts 

 from, 177 



Momentum, Joule's use of the term, 94 



Motion of atoms, 14; perpetual, no 

 fundamental objection to, 38 



