For an hour the music continued without interruption. Then the doorbell rang again and Ernest went to answer it. "Come into the den so we won't disturb the concert," Roger heard him say. "Rog, come in here, will you?" Roger obediently made his way into a little room off the dining room, devoted to the men of the household. A short smooth-shaven, sandy-haired man was standing by the reading table. Roger and he shook hands. "I've been talking to Dr. Austin a good deal about your solar heat apparatus, Rog," said Ernest, "and he's got a proposition to make. Let's sit down and talk it out." He pushed a jar of tobacco toward Austin and the three men, eyeing one another with frank interest, settled themselves in the easy chairs which Ernest indicated with a nod. "I think Ernest said that you represent the Smithsonian Institute," Roger said. "What do you want to do? Put my engine in your museum?" This with a short laugh. Austin shook his head. "I see you are about as ignorant as the rest of the world as to the real nature of our work. Confess now!" Ernest smiled. "I suppose I've been reading papers and reports from the Smithsonian for ten years, but until I met you, Mr. Austin, I was certainly vague about who or what the work represented. Go ahead and give Moore the explanation you gave me, will you?" "Well," began Austin, "an Englishman named Smithson left his estate to his nephew named Hungerford with the stipulation that if Hungerford died without heirs, the state was to go to found the Smithsonian Institution in America. Hungerford obligingly died without issue. It was in 1835, I think, and after a great deal of red tape, about half a million dollars was turned over to the American Congress to go to work with. "Of course, Congress did considerable false stepping but finally the Institution was organized with the avowed purpose of increasing and diffusing knowledge. Rather a large program, eh! It was proposed to carry this program out by stimulating talented men to make original researches by offering prizes, by appropriating every year a sum of money for particular researches and by every year publishing reports on the progress of difficult branches of knowledge. "The original bequest has been increased until now the Institution has use of the income on a million dollars. You'll be surprised to know how much real work has been done by this very little advertised branch of our government. For example, out of the system of weather observation developed by the Institution grew the United States Weather Bureau. The United States Ethnological Research is all done by us--as witness the monumental studies of our American Indians. Powell's great explorations were fathered by the Smithsonian and so were Langley's experiments in flying machines as well as his studies of solar heat." "My word!" exclaimed Roger, "so they were!"