Watt, James, 67, 70, 158. Weaver-bird, 110. Webster, Daniel, 81. Weft, 112. Weight-clock, 196-199. Wheatstone, Professor, 239. Wheel, development of, 147-151. Wheel-barrow, 148. Wicks, 30, 34. Wigwams, 123. Wireless telegraph, 241. Wireless telephone, 241. Wood, Jethro, 82. Worcester, Marquis of, 58, 78, 230. Wrought iron, 43. Y Yarn beam, 110. Z Zuni Indians, 125. * * * * * Transcriber's Notes: Illustrated symbols are denoted as: [symbol: description]. Hyphenation, punctuation, and spelling standardized when a predominant choice was available; otherwise unchanged. Page 81: illustration captioned "FIG. 11.--DANIEL WEBSTER'S PLOW." is referenced in Footnote 12. Page 147: text apparently omitted after "of one piece" Page 198: reference to "Fig. 1" is incorrect. Index entry for "Iron, history of, 41-63" probably should read "41-53" End of the Project Gutenberg EBook of Stories of Useful Inventions, by Samuel Eagle Foreman