Various methods have been adopted and used for this purpose. Some of the more prominent plans will be given. They are each adapted to some certain kind or class of work, and it will often be found that in practice still different forms must be devised in order to meet the existing conditions. There are three methods of recording the time of employees──namely: 1. By entering the time in a book or upon cards, by a Time─Keeper. 2. By entering the time upon cards by the workman himself. 3. By stamping the time upon cards by the workman in a time─recording clock. The first of these methods is the oldest form, and has now to a great extent gone out of use. [Illustration: Fig. 9. Pattern Shop Time Card.] A large majority of the work of a manufacturing plant requires that the time worked by the employees shall be registered twice. That is, one entry shall be of the _day time_ (time paid for _by the day_), which necessitates the recording of the total number of hours worked each day; the second entry shall record the _job time_ (the time worked upon the different jobs during the day). This second entry is sometimes called _Time Distribution_, since the employee's time is distributed over the different jobs upon which he has worked. =Time─Card Forms.= This work is sometimes done by means of time cards as shown in Figs. 9, 10, 11, and 12, which are given as characteristic examples of these methods. These cards are of different tints as a convenient method of recognizing them. Fig. 9 is yellow, and is used in the Pattern Shop. Fig. 10 is chocolate─colored, and is used in the Forge Shop. Fig. 11 is blue, and is used by the Carpenters and Flask Makers. Fig. 12 is white, and is used in the Machine Shop. [Illustration: Fig. 10. Forge Shop Time Card.] [Illustration: Fig. 11. Time Card for Carpenters and Flask Makers.] Similar card forms may be devised for any other department of a plant, or for the departments of plants doing entirely different work. When these cards are used as a means of distributing the time to the various jobs or orders in force in the shop, the _day time_, from which the pay─roll is made up, is usually recorded on a strip of paper in a time clock, the operation being performed by each employee as he passes into the shop morning and afternoon, and when leaving at noon and night. Passing to the clock, the workman swings a lever to his individual number, and presses in a knob, whereby the exact time of the operation is recorded upon a slip of paper, a ribbon, or a disc within the clock. [Illustration: Fig. 12. Machine Shop Time Card.] In other forms of time clock, an individually numbered key is inserted in one of the individually numbered holes, turned around, and withdrawn. The time is recorded in a manner quite similar to that used in the case just described above. The four forms for time cards shown are quite similar, the difference being in the list of operations given at the right─hand end of the card.