KEY AND INDEX 



6, 68; difference between 

 modern and ancient; defects 

 of, 6, 69. 



Winds, controlled by a general 

 mathematical law, 3, 200; 

 their direction in a storm 

 centre, 3, 201, 202; long-time 

 forecasts possible only in 

 India, 3, 205. 



Winkler, Johann Heinrichs, 

 tries to measure speed of elec- 

 tric current, 2, 278. 



Wireless telegraph, used by 

 Cyrus the Great, 8, 3 ; the 

 oldest form of communica- 

 tion by telegraph, 8, 3 ; use 

 of, by Napoleon, 8, 3 ; elec- 

 trical, 8, 47; water and earth 

 as conductors, 8, 48; dis- 

 coveries of Professor Trow- 

 bridge, of Harvard, 8, 49; 

 experiments of Sir William 

 H. Preece, 8, 50; system 

 patented by Thomas A. Edi- 

 son, 8, 50; system of com- 

 munication installed by Smith 

 and Granville, 8, 51; ex- 

 periments with "Hertzian 

 Waves," 8, 52; "coherer" 

 invented by Dr. Branly, 8, 

 52; the work of Marconi, 8, 

 54; "tuning" the messages, 

 8, 57; first trans- Atlantic 

 message, 8, 61; the DeForest 

 system used during the Russo- 

 Japanese war, 8, 65; other 

 systems, 8, 65. 



Wireless telephone, 8, 89; in- 

 struments used by Dr. Lee 

 DeForest, 8, 90; advantage 

 of wireless over wire tele- 

 phones, 8, 91. 



Wise, John, his record flight in 

 a balloon, 7, 256. 



Wiseman, Richard, English sur- 

 geon, 2. 184. 



Wohler, Friedrich, synthesized 

 the organic product urea, 4, 

 54; isomerism proved by, 4. 

 62; school of physiological 

 chemistry under guidance of, 

 4, 128. 



Wolff, Henry, contemporary 

 engraver, methods differ little 



intrinsically from those of early 



wood engravers, 8, 187. 

 Wollaston, Dr. William Hyde, 



his suggestions to improve the 



microscope, 4, no. 

 Women, the bearers of burdens, 



6, 56. 

 Wood-engraving, 8, 184; the 



oldest wood-cuts, 8, 186; 

 improvement made by Diirer, 

 8, 1 88; technic or wood- 

 engraving, 8, 189; time and 

 cost of production, 8, 191. 



Woodhouse, Sir Philip, Gov- 

 ernor of Cape Colony, pur- 

 chased first important South 

 African diamond, 9, 316. 



Wool, the preparation of, for 

 spinning, 9, 18. 



Woolf, Arthur, revived idea of 

 compound engine, 6, 117; 

 demonstrated its merits over 

 simple engine, 6, 117. 



Woolrich, his name intimately 

 connected with the early ef- 

 forts at utilization of magne- 

 to-electric power, 6, 178. 



Worcester, Marquis of. See 

 Somerset, Edward. 



Work, definition of, 6, 29. 



Wprtley, Col. Stuart, his work 

 in photography, 8, 232. 



Wortman, Dr. J. L., his evi- 

 dence in connection with the 

 fossil lineage of the edentates, 

 3, 114- 



Wright, Orville (with his 

 brother Wilbur) , invented 

 the flying-machine, 7 ? 288; 

 his flights near Washington 

 in an attempt to fulfill 

 the Government tests, 7, 

 295; his flights at Berlin, 



7, 295. 



Wright, Wilbur (with his 

 brother Orville), invented the 

 flying-machine, 7, 288; his 

 series of flights in France, 7, 

 293; his sensational flight 

 up the Hudson from Gov- 

 ernor's Island, 7, 295. 



Wundt, Dr. Wilhelm, studies of 

 sensations, apperception, and 

 volition, 4, 267. 



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