Vacation chart, 53 Variables for curves, 84 Variables, two independent, 333 Velocity of water in streams, 87 Vertical arrangement of curves, 347, 349

bar charts, 354

bars, 46, 47

for components, 138

Wage charts, 180, 181, 182

comparison on railroads, 49 Wall board, 232

charts, 306

exhibits, 358

maps, 225, 229 Wall Street Journal, 308 Warne, Frank J., 103 Water power in United States, 216 Water storage-capacity curves, 159 Wave lengths on curves, 283 Waves in curves, 97 Wavy line for bottom of chart, 350, 352,

Weather cnarts, 93

Wealth, curves showing distribution, 197 Weight of steel plates chart, 333 Weighted averages, 103 Westinghouse Electric & Manufacturing

Co., 295 Westinghouse, George, 31 Wheat, production of, 1910, 27 Wheeling & Lake Erie Railroad ^ 02 Whipple, George C, 95 White, William Pierrepont, 222 Worcester Polytechnic Institute, 204 World's Work, the, 39, 40, 43, 49, 51, 211 Worsted mill operation, 52, 54

Yale University, 111, 212

Years, methods for naming on curves, 82

Yule, G. Udny, ii

Zero lines for curves, 82, 140, 350, 351, 352 Zero lines on curve cards, 271 Zizek, Franz, ii

Jiiiiii 11!

il! i

Co., 295 Westinghouse, George, 31 Wheat, production of, 1910, 27 Wheeling & Lake Erie Railroad ^ 02 Whipple, George C, 95 White, William Pierrepont, 222 Worcester Polytechnic Institute, 204 World's Work, the, 39, 40, 43, 49, 51, 211 Worsted mill operation, 52, 54 Yale University, 111, 212 Years, methods for naming on curves, 82 Yule, G. Udny, ii Zero lines for curves, 82, 140, 350, 351, 352 Zero lines on curve cards, 271 Zizek, Franz, ii Jiiiiii 11! il! i