The third test was a cancellation test. The subject was requested to cross out, with a pencil, every 7. The fourth was a simple “Easy Directions” test. The fifth was a number-checking test, in which the subject was asked to place a check opposite every group which contained both a 7 and a 1. The sixth test was a tapping test, in which the subject was required to push down, as rapidly as possible, a telegraph key to which was attached a counter. The number of recorded thrusts over a period of one minute constituted a record for that performance. The seventh test was an accuracy test. This was given with the aid of a brass plate with nine holes, graduated in size from ½ inch to ⅛ inch in diameter. The subject was asked to take a brass-pointed pencil and insert it into each hole, beginning with the largest and continuing through the smaller ones, until the pointer touched the brass side of one of them. The brass-pointed pencil was wired in circuit with the brass plate containing the holes so that, whenever the brass point touched the side of the hole or any part of the brass plate, an electric contact was made which produced a click in a telephone receiver which the subject held to her ear. At the start of the test, the subject was instructed to put the brass pencil into each hole in succession until she heard a click in her ear, when she was to start all over again. The speed of the subject’s movements was controlled by a metronome, so as to allow thirty trials per minute. This test occupied from two to three minutes. The eighth test was a steadiness test. This consisted of two brass bars about twelve inches long, set so as to form a long, horizontal V. The subject was asked to take the brass pointer and pass it along between these two bars. The farther she went, the narrower became the space between the bars. As soon as the brass pointer touched one of the bars it produced a click in the telephone receiver. The point at which this brass pointer touched was then read on a scale on the lower bar. Each subject was given fifteen trials and the last ten were averaged and constituted the subject’s average. These eight tests were given to seventy-three girls, fifty-two of whom were inspectors and twenty-one gaugers. The scores in the tests were compared with the average daily work of the girls. This average was obtained by recording the number of pounds of shells inspected by the girls and the number of hours required for the work. It was found that the inspectors who inspected the largest number of shells in a given time attained the largest scores in the tests, thereby indicating the value of the tests in determining whether an applicant for work as an inspector had the mental capacity for the work.