cards, 259, 261

curve cards, 291, 296

machines, 261, 296 Boards for pin records of costs, 191, 192 Bonus earned chart, 52, 54 Boston Elevated Railroad, 4 Boston Globe, 212

Boston Health Department Report, 30, 109 Bowley, Arthur L., ii, 98 Breaks in drawings, 190 Bridges, drawing, upon photographs, 209 Brotherhood of Railroad Trainmen, 103 Building construction in United States, 120,

Buildings, maps for showing height of, 220 Bureau of Railway Economics, 257 Butter-fat curves, 279

Camera lenses, 330

Cameras, motion picture, for time study, 50 Campaigns, political, 338 Car-floats, dispatching, 61, 62 Cars, shortage and surplus, 349 Cardboard for blue-printing, 259, 261 models, 336

GRAPHIC METHODS

Card-sorting machines, 322 Cards for blue-printing, 259, 261

for curve-plotting, 256

for curves, 275

for tabulating machines, 320 Cards, information, 287 Carson, John M., 326 Cartoon drawings, 20, 21 Cattle distribution in United States, 215 Cautions, a few, 344

Celluloid-covered tacks for maps, 247, 248 Celluloid, erasing drawings from, 210

flags for maps, 247

for drawings with maps, 210

for mounting maps, 210

tacks for writing, 247, 248 Cement plants in United States, 243

price of for thirty years, 77 Census Abstract, 218

Census Atlas of United States. See Statistical Atlas Census-Office methods, 320, 321 Census tabulating card, 320 Charts, best size for, 345

in political campaigns, 338

on walls, 306 Checking list for graphic work, 359, 360 Chicago Burlington & Quincy Railroad,

Chicago pin map for population, 246 Chicago telephone rates, 126 Choice of scales, 352

Cincinnati, homes of factory workers, 214 Circle and sectors, 5 Circles compared, 36, 37 Clamps for hanging maps, 232 Cleveland Plain Dealer, 92 Cloak and suit industry in New York, 166 Coals, comparative value of, 88 Coloring maps, 209 Color-printing, 5, 331 Colors for chart work, 57 Columns of figures, order for, 45 Combined curves, 125 Commerce of the United States, 70, 71