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 Portland, Oregon, 208

Power development in United States, 239

Presidential election analysis, 10

Princeton graduates, class of 1901, 73

Princeton University, 111

Production schedule curves, 150

Profile drawings, 211

Progress photographs, 50, 51

Progressive averages, 153

Prominent bar for contrast, 30

Prout, Curtis, ii

Proportions of charts, 355, 356

Prosperity charts, 104

Prussia, distribution of wealth in, 197

Pujo Money Report, 13

Punched-card tabulating machines, 320, 321, 322, 323, 324

Purchasing-department curves, 293

Queen Quality shoes, advertisement, 233

Races in population of the world, 4

Railway Age-Gazette, 115, 142, 224

Railroad annual reports, 309 earnings in United States, 115 operating costs, 142, 143

Rank charts, 32, 63, 65, 66

Rea, Samuel, 308

Record departments for cities, 299 room for corporations, 292

Records for the executive, 288 needless, 285

Rectangular co-ordinates, 132

Reduction of earnings, 329, 330

Reducing glass, use of, 241, 329

Reduction in size of drawings, 241

Reflecting lantern for curves, 303

Reflectoscope for curves, 304

Reports of corporations, 307

Returns, election, 341

Revenues of railroads of United States, 257

Review of Reviews, 46, 47, 229, 231

Rittenhouse, Elmer, 175, 351, 352

Road signs, Japanese, 346

Roads in New York State, map, 222

Routing charts, 17

Routing of papers in an office, 34 salesmen, 236

Royal Statistical Society, 205, 206

Rule, slide, 326, 328

Rules for graphic presentation, 361

Russell Sage Foundation, 24, 32, 33

St. Louis & San Francisco Railroad, 224

Sales analysis curves, 188, 269

Sales records by tabulating machines, 324 record map, 223

Salesmen, chart for ranking, 63 routing of, by pins, 226

San Francisco fire, 120, 121

"Satellite Cities", 214

Saturday Evening Post, 238

Savings-banks deposits in United States, 350

Scale arrangement for charts, 362

Scales, choice for horizontal and vertical, 352 double, for curves, 79 for charts, 8 on charts, rule for, 211

Scallop shells, 164

Schedule curves for factory output, 150

Schools of the United States, 32

Scientific American, the, 29

Scott, Roscoe, E., 337

Seaboard Air Line Railway, 177

Sections omitted from drawings, 190

Serial numbers for curves, 286

Shading, Ben Day, 331, 332 mechanical, 331, 332

Sheffield Scientific School, 111

Shipping of various countries, 24

Ships, length of, 49, 51

Shot-gun diagrams, 201

Significant figures, 326

Simple comparisons, 20 involving time, 36

Slide rule, use of, 326, 328

Slope of curves, 130, 131

Smoke deposits, measuring, 245

Smooth curves, 118, 119, 201, 357

Smoothing curves, 98

Solid models, 336

Soot deposits, measuring, 245

Sophie 19th, milk record, 278

Spot maps, 246

Standard corporation, 334

Standards for graphic presentations, 363

Statistical Atlas, 8, 28, 36, 65, 80, 130, 168, 172, 215

Statisticians for corporations, 293

Steam, cost of producing, 12

Steam turbine, tests of, 122

Steel, curves for strength of, 119

Steel plates, weight of, 333

Stockholders of corporations, number of, 308

Storage capacity curves, 159

Straw-board for mounting maps for pins, 230 for use with map pins, 191