132 Conclusions. 1. The men in the Group 20 to 29 years, especially, reflect excellent physical development. The d value for biceps girth is 10.65 compared vith 10.32 for @ reference military (young) man® (A difference greater than 0.20 is highly significant). 2. By contrast, the women (ages 24 to 39) with the exception of the arm measurements are either physically immature, or they have lost a considerable amount of lean tissue. The striking immaturity is reflected in the girths of hips and thigh. The d values for these neasurements are much lower than the coaparable d values for a reference woman and for the mean values for a group of American women measured about 1937 - 1939 by the Dept. of Agriculture in connection with garment patterns. is noteworthy. The relatively samll size of the calf msculature The ¢ values for arm size compare favorably with those of a reference voman and with those of the USDA (35-39 yr) group.