Periodic photographs of any kind of construction work are one of the most striking forms of graphic presentation. Many large contractors and machine manufacturers now make a practice of having photographs taken of each job at least once each week. The

THE RISING WAGE SCALE

SHOWING THAT THE PAY OF RAILROAD EMPLOYEES HAS INCREASED FROM 30 TO 50 PER CENT. IN TWELVE YEARS. NOTE THAT THE GENERAL OFFICE CLERKS NOW RECEIVE LESS THAN THE TRAINMEN.

World's Work

Fig. 54. Wage-Scale Increase

This illustration is so drawn that wages appear to have increased much more rapidly than is proved by the actual data given in the chart itself. The chart should have been extended to show the zero line of the vertical scale so as to assist the reader in getting a correct interpretation

50 GRAPHIC METHODS

photographs are carefully dated and filed for reference in case there should be any dispute later regarding the progress of the work and payment therefor. If a large card giving the date of the work is placed in front of the camera so that the date is photographed directly into the picture, the date is somewhat more easily proved than it would be otherwise. Putting the date card in front of the camera with the date upon the card gives a chance for any passer-by to check the honesty of the date on the picture, much as the "amount purchased" card at the front of a cash register checks the honesty of the clerk.