The erection of the great new hangar, or dock, was a story in itself. Even in this day of architectural and engineering miracles, the building was unbelievably huge. It was the largest airport factory and dock in the world. Its floor was a vast concrete spread, the largest uninterrupted floor area yet built. Over this rose the dock structure, a cavernous semi-paraboloid building. From the passing airplane, it looked like a peanut or a silkworm cocoon. It was lighted with tier after tier of glass, in steel frames, so precisely made that a push-button controlled whole units of windows. The enormous doors, two-thirds glass, slid on ball-bearing wheels along tracks imbedded in the floor. These, too, were operated by a one-man lever. In the top of the arching roof was tackle to hold the dirigibles during construction. Here swung the great shapes slowly evolving from ghostly skeletons to the finished marvels ready for flight. There was space for the construction of two ships at the same time. The ship that hung there partly finished was the largest yet built. Perfect in line, and carrying many new features; as yet unnamed, her career undecided, she drew David like a magnet. She was his dream ship, at last come true. At the back of the dock built into the wall was a row of offices for the executives. The central office belonged to Colonel Porter, A. C., U. S. A. retired, Commandant of the school and chief of the dock forces. Colonel Porter was a lifelong friend of Mr. Hammond, and his influence had persuaded the great financier to put his personal energy and many millions of his vast fortune into the great task of today—the development of aviation. One morning late in May, the two friends sat in Colonel Porter’s office. “I hardly expected you so soon,” said Colonel Porter. “Well, Port, I’ve decided to spend the rest of my life around the ships. I like it. I’m not young, but my money can do the hard work. I’m inclined to help you push this business as far as it will go.” “Exactly what I hoped you would decide to do!” exclaimed the Colonel. “And you have already made a wonderful start. This ship you are financing—you would be surprised at the callers she has had; people from all over the world, looking her over, taking snapshots of her, writing down her dimensions. We could sell her tomorrow.” “Have any changes been made recently?” asked Mr. Hammond. “Not a thing,” said Colonel Porter. “Here are the original specifications.” He hunted up a long sheet of paper. “Never mind the figures,” said Mr. Hammond hastily. “My clipping agency sends me about two a day, usually different, but they all agree that she contains ten million, two hundred thousand cubic feet and is twelve stories high amidship. You know that item seems to make a great hit with the public. What will her lifting power be, Port?”