Captain Wayburn, being a medical officer of the Army, wore shoulder straps with a green ground. At the ends of each strap rested the two bars that proclaimed his rank of captain. Being a staff officer, Captain Wayburn wore black trousers, instead of blue, beneath his blue fatigue blouse. Moreover, the black trousers of the staff carried no broad side stripe along the leg. The side stripe is always in evidence along the outer leg side of the blue trousers of the line officer, and the color of the stripe denotes to which arm of the service the officer belongs--a white stripe denotes the infantry officer, while a yellow stripe distinguishes the cavalry and a red stripe the artillery officer. Captain Wayburn now laid out two other sets of papers on his desk. These were the blanks for the surgeon's report on an applicant for enlistment. At first this examination didn't seem to amount to much. The surgeon began by looking Hal Overton's scalp over, next examining his face, neck and back of head. Then he took a look at Hal's teeth, which he found to be perfect. "Stand where you are. Read this line of letters to me," ordered the surgeon, stepping across the room to a card on which were ranged several rows of printed letters of different sizes. Hal read the line off perfectly. "Read the line above." Hal did so. He read all of the lines, to the smallest, in fact, without an error. "There's nothing the matter with your vision," remarked Captain Wayburn, in a pleased tone. "Now tell me--promptly--what color is this?" The surgeon held up a skein of yarn. "Red," announced Hal, without an instant's hesitation. "This one?" "Green." "And this?" "Blue." And so on. Hal missed with none of the colors. "Go to that chair in the corner, Overton, and strip yourself, piling your clothing neatly on the chair. Terry, come here." Noll went through similar tests with equal success. By the time he had finished Hal was stripped. Now came the real examination. Hal's heart and other organs were examined; his skin and body were searched for blemishes. He was made to run and do various other exercises. After this the surgeon again listened to his heart from various points of examination. Finally Hal was told to lie down on a cot. Now, the examination of the heart was made over again in this position. It was mostly Greek to the boy. When the examination was nearly over Noll was ordered to strip and take his turn. When it was over Captain Wayburn turned to them to say: "If I pronounced you young men absolutely flawless in a physical sense, it wouldn't be much of an exaggeration. You are just barely over the one hundred and twenty pound weight, but that is all that can be expected at your age." "You pass us, sir," asked Hal eagerly. "Most decidedly. As soon as Terry is dressed I'll hand you each your papers to take back to the recruiting officer." Five minutes later Hal and Noll returned to the main waiting room.