GENERAL INDEX 



ing-beam, 6, in ; antagonism 

 to high pressure considered, 

 6, 112; patented idea of 

 rotary engine, 6-, 119120. 

 Weaving, the art as practised 

 by primitive races, 8,39; how 

 the Egyptians may have 

 learned the art, 9, 39; the 

 dependence of weaving upon 

 spinning, 9, 41 ; John Kay 

 invents the flying shuttle, 

 9, 42; the power-loom in- 

 vented by Dr. Cartwright, 



9, 44- 



Weber, E. H., experiments on 

 nerve stimuli, 4, 264. 



Weber, one of the first inventors 

 of a practical working tele- 

 graph, 8, 17. 



Wedge, an inclined plane, 6, 38; 

 modifications of, 6, 54. 



Wedgwood, Josiah, gauged the 

 highest temperature with the 

 clay pyrometer, 3, 206; the 

 superiority of his pottery ex- 

 plained, 9, 232. 



Wedgwood, Thomas, his ap- 

 plication to picture-reproduc- 

 tion of Scheele's discovery 

 that light changes the color 

 of certain chemicals, 8, 221. 



Weisenthal, Charles F., invented 

 a sewing-machine for sewing 

 hand-embroidery, 9, 89. 



Weismann, August, objections 

 to the Lamarckian conception 

 that acquired characters are 

 transmissible, 4, 178; theory 

 of heredity, 5, 134; scheme of 

 the relations of the intra- 

 cellular units, 6, 226. 



Wellington, Duke of, his op- 

 position to the development 

 of the automobile, 7, 160. 



Wells, Dr. Horace, experiments 

 in painless dentistry, 4, 213. 



Wells, Dr. W. C., solved the 



Sroblem of dew formation 

 , 183; his essay on dew, 3, 

 185. 



Welsbach, Dr. Auer von, his 

 invention of the incandescent 

 gas burner, 6, 210. 

 Werner, a scientist of Saxony, 



3, 131; made the earliest con- 

 spicuous attempt to classify 

 the earth's strata, 3, 155. 



Westinghouse, George, inventor 

 of the Westinghouse air brake, 

 7, 141. 



Wheatstone, Sir Charles, his 

 name intimately connected 

 with the early efforts at utili- 

 zation of magneto-electric 

 power, 6. 178; invented the 

 "magic lyre telephone," 8, 

 69. 



Wheel, lever of the first-class, 6, 

 33; primitive friction re- 

 ducer, 6, 55; speculation as to 

 invention of, 6, 56. 



Wheelbarrow, lever of the sec- 

 ond class, 6, 30. 



Whistler, one of the great ex- 

 ponents of the form of en- 

 graving known as etching, 8, 

 196. 



White, C. A., invented the "solid 

 back" transmitter, 8, 85. 



Whitney, Eli, inventor of the 

 cotton-gin, 9, 9; early life of, 

 9, 9; circumstances leading 

 up to his invention of the 

 cotton-gin, 9, 10; difficulties 

 attending the patenting and 

 marketing of his invention, 

 9, ii. 



Wilcox, James, the balloon as- 

 cension of, 7, 237. 



Wilde, Dr. Henry, inventor of 

 the first separately excited 

 dynamo, 6, 178. 



Wilkinson, assisted in clearing 

 up the mysteries of the in- 

 scriptions on the Rosetta 

 Stone, 1, 27. 



Willis, Thomas, English phy- 

 sician, 2, 187. 



Wilson, Allen B., improves the 

 mechanism of the sewing- 

 machine, 9, 97. 



Wilson, Thos. P., his discovery 

 of acetylene gas, 6, 213. 



Wilson, Thomas, built the first 

 iron vessel, 7, 75. 



Windlass, a lever of the second 

 class, 6, 34- 



Windmills, described, history of, 



[225] 



