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77 fallen short of the task to the extent of one piece or a dozen.

In principle, these two systems appear to be almost identical, yet this small difference, the slightly milder nature of task work with a bonus, is sufficient to render it much more flexible and therefore applicable to a large number of cases in which the differential rate system cannot be used. Task work with a bonus was invented by Mr. H. L. Gantt, while he was assisting the writer in organizing the Bethlehem Steel Company. The possibilities of his system were immediately recognized by all of the leading men engaged on the work, and long before it would have been practicable to use the differential rate, work was started under this plan. It was successful from the start, and steadily grew in volume and in favor, and to-day is more extensively used than ever before.

Mr. Gantt's system is especially useful during the difficult and delicate period of transition from the slow pace of ordinary day work to the high speed which is the leading characteristic of good management. During this period of transition in the past, a time was always reached what a sudden long leap was taken from improved day work to some form of piece work; and in making this jump many good men inevitably fell and were lost from the profession. Mr. Gantt's system bridges over this difficult stretch and enables the workmen to go smoothly and with gradually accelerated speed from the slower pace of improved day work to the high speed of the new system.