But when he got to work with draftsman and stenographers, when a curt kindliness filled his voice, he proved to be concentrated, unafraid of responsibility, able to keep many people busy; trained to something besides family tradition and the collegians' naïve belief that it matters who wins the Next Game. His hands would have given away the fact that he had done things. They were large, broad; the knuckles heavy; the palms calloused by something rougher than oar and tennis-racket. The microscopic traces of black grease did not for months quite come out of the cracks in his skin. And two of his well-kept but thick nails had obviously been smashed. The men of the same rank as himself in the office, captains and first lieutenants of business, said that he "simply ate up work." They fancied, with the eager old-womanishness of office gossip, that he had a "secret sorrow," for, though he was pleasant enough, he kept very much to himself. The cause of his retirement from aviation was the theme of many romantic legends. They did not know precisely what it was he had done in the pre-historic period of a year before, but they treated him with reverence instead of the amused aloofness with which an office usually waits to see whether a new man will prove to be a fool or a "grouch," a clown or a good fellow. The stenographers and filing-girls and telephone-girls followed with yearning eyes the hero's straight back. The girl who discovered, in an old _New York Chronicle_ lining a bureau drawer, an interview with Carl, became very haughty over its possession and lent it only to her best lady friends. The older women, who knew that Carl had had a serious accident, whispered in cloak-room confidences, "Poor fellow, and so brave about it." Yet all the while Carl's china-blue eyes showed no trace of pain nor sorrow nor that detestable appeal for sympathy called "being brave about his troubles." * * * * * There were many thoughtful features which fitted the Touricar for use in camping--extra-sized baggage-box whose triangular shape made the car more nearly streamline, special folding silk tents, folding aluminum cooking-utensils, electric stove run by current from the car, electric-battery light attached to a curtain-rod. But the distinctive feature, the one which Carl could patent, was the means by which a bed was made up inside the car as Pullman seats are turned into berths. The back of the front seat was hinged, and dropped back to horizontal. The upholstery back of the back seat could be taken out and also placed on the horizontal. With blankets spread on the level space thus provided, with the extra-heavy top and side curtains in place, and the electric light switched on, tourists had a refuge cleaner than a country hotel and safer than a tent.... The first Touricar was being built. Carl was circularizing a list of possible purchasers, and corresponding with makers of camping goods.