KEY AND INDEX 



cure epilepsy, hysteria, and 

 gout, I, 277. 



John Mason, the, an omnibus 

 horse-car operated on the 

 first street railway, 7, 176. 



Joly, Dr. Robert, first screen- 

 plate process in color-pho- 

 tography put forward by, 

 8. 242 ; description of his 

 plates, 8, 242. 



Jones, Chapman, method of 

 color-photography outlined 

 by, 8, 247. 



Joseph and Roderick, and Mar- 

 tin de Bohemia, credited 

 with inventing the apparatus 

 known as the astrolabe, 7, 19. 



Jouffroy, Marquis de, experi- 

 ments with steam-propelled 

 boats, 7, 66. 



Joule, James Prescott, the work 

 of, 3, 256; his theory of the 

 conservation of energy, 3, 

 257; his paper of 1843, 3, 269; 

 his theories on the calorific 

 effect of magneto-electricity 

 and the mechanical value of 

 heat, 3, 270. 



Julian calendar, it follows the 

 Alexandrian theory, giving us 

 the familiar leap-year, 1, 36. 



Julien, E., the storage-battery 

 line built by, 7, 188. 



Julius Caesar, water mills prob- 

 ably introduced in Rome 

 during time of, 6, 70. 



Jupiter, its moons discovered by 

 Galileo, 2, 79. 



Just, in connection with Hana- 

 man, patented a lamp using 

 incandescent filament, 6, 235. 



KADMUS, a Phoenician, who, ac- 

 cording to a Greek legend, 

 brought the knowledge of 

 letters to Europe, 1, 86. 



Kaiser Wilhelm //. and Deutsch- 

 land, German ships that for 

 several years held the ocean 

 record for speed, 7, 82. 



Kant, Immanuel, his conception 

 of the formation of the world, 

 3, 26; his theories of the 

 solar system, 3, 27; defects 



in his conception, 3, 30; and 

 transmutation of species, 4, 

 149. 



Kay, John, inventor of the fly- 

 ing shuttle, 9, 42; what his 

 invention meant to the com- 

 mercial world, 9, 42. 



Kay, Robert, inventor of the 

 drop-box" used in weaving, 



9, 43- 



Kelly, William, invented a 

 method of running the spin- 

 ning-mule by water-power, 9, 



35- 



Kelvin, Lord, his theory of the 

 developmental changes of the 

 earth, 3, 165; he endorses 

 Joule's theories on the conser- 

 vation of energy, 3, 272; his 

 doctrine of the dissipation of 

 energy, 3, 276; declared that 

 he had learned nothing new 

 concerning the nature of 

 energy in fifty years, 3, 279; 

 his speculation about ether, 

 3, 288; his doctrine of the 

 vortex theories of atoms, 3, 

 290; his estimate of the size 

 of the molecules floating in the 

 air, 3, 298; theories of radio- 

 activity, 6, 106; explanation 

 of the continued heat of the 

 sun, 5, 207; estimate of the 

 heat-giving life of the sun, 5, 

 208; computations as to the 

 age of the earth's crust, 6, 

 210; computations of the 

 rigidity of the telluric struc- 

 ture, 5, 212; inventor of the 

 modern compass, 7, 14; his 

 connection with the laying of 

 the Atlantic cable, 8, 30; ul- 

 timate success of cable-laying 

 in a large measure due to his 

 inventions, 8, 33; invents the 

 mirror-speaking instrument, 

 or "marine galvanometer," 

 8,38; invention of the siphon 

 recorder, 8, 45; 



Kepler, Johann, life and work, 

 2 } 70; theory of planetary 

 distances, 2, 73; assistant of 

 Tycho Brahe, 2, 74; Kepler's 

 Laws, 2, 75; studies of re- 



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