¹In columns _A_, _B_, and _C_ the filled spaces were made up of 4, 5 and 6 points, respectively. The total weight of the filled space in _A_, _B_ and _C_ was always just equal to the weight of the two points in the open space, 20 gr. In (_a_) the filled distance was given on the right arm first, in (_b_) on the left arm. It will be observed that this reversal made practically no difference in the judgments and therefore was sometimes omitted. In _D_ the filled space consisted of four points, but here the weight of each point was 10 gr., making a total weight of 40 gr. for the filled space, as against 20 gr. for the open space. In _E_ the weight of each was 20 gr., making the total weight of the filled space 80 gr. TABLE V. 6 Centimeters. A B C D E less = gr. less = gr. less = gr. less = gr. less = gr. R. (a) 10 8 2 12 0 8 14 6 0 9 6 5 8 2 10 F. (a) 12 4 4 12 6 2 12 4 4 8 3 9 6 3 11 K. (a) 10 2 8 12 6 2 14 2 4 6 4 10 7 2 11 -------- -------- -------- -------- -------- 32 14 14 36 12 12 40 12 8 23 13 24 21 7 32 TABLE VI. 8 Centimeters. A B C D E less = gr. less = gr. less = gr. less = gr. less = gr. R. (a) 4 1 5 5 1 4 7 0 3 4 0 6 3 0 7 (b) 4 0 6 5 1 4 6 1 3 4 1 5 2 1 7 F. (a) 5 0 5 5 0 5 6 0 4 3 0 7 4 0 6 (b) 5 1 4 6 1 3 8 0 2 4 1 5 2 3 5 K. (a) 4 1 5 6 1 3 7 1 2 3 2 5 1 3 6 (b) 4 0 6 7 0 3 6 1 3 4 0 6 3 0 7 ------- ------- ------- ------- ------- 26 3 31 34 4 22 40 3 17 22 4 34 15 7 38 TABLE VII. 12 Centimeters. A B C D E less = gr. less = gr. less = gr. less = gr. less = gr. R. (a) 3 6 16 8 3 14 10 8 7 6 3 16 3 4 18 F. (a) 5 7 13 10 5 10 9 6 10 6 4 15 5 1 19 K. (a) 8 2 15 8 4 13 13 9 3 3 7 15 3 0 22 -------- -------- ------- -------- --------- 16 15 44 26 12 37 32 23 20 15 14 46 11 5 59 TABLE VIII. 18 Centimeters.