There was an average loss of .28 per cent in the weight-height-age relationship for the test group, and of 2.11 per cent for the control group. The average improvement of the test group in excess of the control group is, then, 1.83 per cent. The median improvement of test group over and above control is 4.00 per cent. The test group is more variable than the control in improvement. The greatest improvement, 8 per cent, is found in both groups. TABLE IV Gain in Height--6 Months, 19 Pairs N[16] Test Group (A) Control Group (B) Inches Test 1 Test 2 Gain Test 1 Test 2 Gain A-B 9 48.1 49.4 1.3 51.9 55.2 3.3 -2.0 4 47.5 49.2 1.7 48.9 52.0 3.1 -1.4 5 44.9 45.2 .3 46.6 48.1 1.5 -1.2 6 43.1 43.9 .8 45.4 47.3 1.9 -1.1 2 42.5 44.1 1.6 45.2 47.0 1.8 -.2 28 54.9 55.8 .9 53.4 54.5 1.1 -.2 16 51.6 52.3 .7 48.7 49.5 .8 -.1 10 46.1 47.7 1.6 45.6 47.2 1.6 0 25 50.0 50.8 .8 50.2 50.9 .7 .1 1 46.0 47.6 1.6 46.4 47.8 1.4 .2 3 47.0 48.4 1.4 51.7 52.9 1.2 .2 8 50.8 51.8 1.0 46.8 47.6 .8 .2 14 51.0 51.6 .6 57.9 58.3 .4 .2 7 42.9 44.8 1.9 41.9 43.2 1.3 .6 11 45.8 47.7 1.9 43.6 44.9 1.3 .6 19 57.7 59.0 1.3 46.7 47.2 .5 .8 26 51.6 54.3 2.7 51.4 52.3 .9 1.8 22 53.0 56.4 3.4 56.8 58.1 1.3 2.1 13 61.5 65.0 3.5 56.8 57.8 1.0 2.5 Av. 49.26 50.79 1.53 49.20 50.62 1.36 .16 M 1.4 1.3 .2 75%ile 1.90 1.75 .65 25%ile .78 .8 -.43 Q .56 .48 .54 P. E. (distribution) .53 .44 .44 P. E. (average) +-.12 +-.10 +-.16 Av.=1 P. E. M=1.25 P. E. The greatest loss, 10 per cent, is in the control group. Eight cases show a loss in comparison to their controls, and nine reveal a gain. On the whole, there is some significance in the small net improvement manifested by the test group. The average is 2.02 P. E.'s, and the median 4.40 P. E.'s.