58.44

3.977

7.35

0.1360

260.3

916.2 1176.5

837.0 1097.2

0.4249 1.2205 1.6454

59.34

4.038

7.24

0.1380

261.3

915.4 1176.8

836.2 1097.4

0.4262 1.2179 1.6441

60.26

4.100

7.14

0.1400

262.4

914.7 1177.1

835.4 1097.6

0.4276 1.2153 1.6429

61.19

4.163

7.(H

0.1421

263.4

914.0 1177.4

834.6 1097.8

0.4290 1.2127 1.6417

oncl S Marks and H Suptrhcatcd Steam

arvcy

." Lon

N. Davis, "Tables and Diagrams of the Thermal Properties of Saturated anc gmanj. Green and Co., 1909.

B. A Tabular Arrangennent.

Note the grouping of the rows of figures into fives. The type was selected to aid the reading of the figures. These two improvements have, according to the authors, made the tables much more legible than they were in previous editions.

GRAPHIC PRESENTATION

MACHINE TABULATION

Punched card tabulating machines have proved a great aid in sorting and accumulating data. The information need not be purely statistical. Cards such as the one shown below are the basis of the punched card plan. Each card is a general-purpose record for one item, one customer, one salesman, or one person, etc.

Holes are first punched in pre-determined positions on the cards according to the data registered.

A sorting machine is used to group the cards according to the information punched in them. The cards are guided automatically into receiving pockets according to the position of the punched holes in the vertical columns. The automatic sorting is made on one column at a time. It is apparent, therefore, that to arrange a group of cards in numerical sequence according to the data punched in a three-column field, the group of cards is passed through the sorting machine three times.