 The Cavalcade of America, presented by Dupont. Another chapter in the Cavalcade of America in music presented by Dupont, featuring Don Voorhees and his distinguished orchestra. Music of the movies is the title of this evening's story, and what progress the movies have made. Better writing and music, superior direction and acting, and greater technical skills, all of which combine to give us the excellent entertainment provided by Motion Pictures today. Incidentally, one of the contributions of research chemistry to modern Motion Pictures is the improved film on which both picture and soundtrack are recorded. Dupont is an important source of the film used today. Thus, in entertainment as in other fields, Dupont chemists are providing better things for better living through chemistry. Motion Pictures from the days of the Nickelodeon up to the present day. Before we turn the calendar back, Don Voorhees and his orchestra are going to play for you a delightful song from the picture that is playing this very minute. Its title is Swing Time. Fred Astaire and Ginger Rogers are the stars, and the song by Jerome Kern is The Way You Look Tonight, with the noise of a silent film projector and the busy piano player who had to portray single-handed all of the thrills and heartthrobs in the perils of Pauline. It's being tied to the railroad tracks of the Sidley Villa one moment please while we change reel in the days of the Nickelodeon before picture theaters began to use small orchestras to accompany the action instead of a lone piano. The year 1915 brought forth a production that made Motion Picture history and remains today a landmark in the progress of the silver screen. The Birth of a Nation. A musical score was composed specially for the picture and furnished to the orchestras in each theater. And while the theme was brought out 14 years later, become the theme song for Amos and Andy. Do you recognize it? As pictures became more ambitious, the musical accompaniment became more important, portraying every mood of the picture. Let us turn the calendar quickly ahead to 1923 and the Motion Picture of the Clifford Wagon. Special music was composed to help you pick the California Gold Rush in 1849 around Stephen Foster's great song of that period, Oh, Susanna. Many of these theme songs, without the showing to the pictures, became big hits. Diane from 7th Heaven. Ramona from the picture Ramona. Laugh clown laugh from the picture of the same title. Angelomia from Street Angel. Jeanine from Lallertime. The first big theme song hit was Charmaine from the big parade. Remember it? The Singing Fool, which was the first all-music, all-talking picture. It was here that Al Jolson introduced the first song hit to be sung for screen. Silver, Brown, and Henderson's Sunny Boy. Metro Golden Mare produced the rogue song. This was important for it established the success of the operetta type of sound picture. Lawrence Tippert was the star and the audiences throughout the country thrilled to his singing of the rogue song with his delightful singing and acting in Love Me Tonight. Rogers and Hart wrote some grand song for this picture. Don Boris and his orchestra are going to play one of them. Isn't it romantic? Remember the cry from the old Nickelodeon music that's tuned as cheek to cheek from Irving Berlin's 1935 hit Top Half. The motion picture productions of Grand Opera, Operetta, musical comedies and reviews are now making use of all the great composers of our time as well as those of the past. The latest smash hit picture is Swing Time with music by Jerome Kern, from which Don Boris and the orchestra will play one of the outstanding hits, in the jungle of New Guinea, that remote island in the South Seas. The operators needed a heavy electric cable more than one-eighth of a mile long, but this cable had to have a different kind of per jacket. For the covering of natural rubber, ordinarily used, broke down quickly and completely under the direct rays of the tropical sun. So the American manufacturer who received this order turned to Duprene, Couponc's chloroprene rubber for the protective covering on this special cable. Thus we see man-made rubber, a creation of chemical research, invading a country where natural rubber is produced to do a job that nature's product could not perform. Here's another example of the usefulness of Duprene. Certain types of airplanes are built so that their fuel supply is carried in sections of the metal wing, and the seams must be caulked or sealed to prevent leakage of the all-important fuel. A resilient tape made of Duprene is employed to seal these tank joints because unlike ordinary rubber, it is stubbornly resistant to the ravages of gasoline or oil. You may never have occasion to see a New Guinea gold dredge or look inside the wing of an airliner, but you can be sure that Duprene is serving you somewhere in some way. Perhaps it is in the ignition wires of your automobile, in your oil burner or washing machine. In dozens of places, Duprene is rendering superior service because of its distinctive properties. Amazing to believe, this useful product of our modern chemical age is made by Dupont from limestone, coal, and salt. Even though the present cost of making it is quite high, Duprene offers assurance that if necessary, America can be independent rubber supplies from foreign lands. More important now, Duprene gives industry a new material from which to fashion articles of greater usefulness. In creating this chloroprene rubber, Dupont chemists have again made good their pledge, better things for better living through chemistry. This evening completes the summer series of the Cavalcade of America in Music. Next week at this same time, Dupont will resume its popular fall and winter series, re-enacting authentic episodes from the brim pageant of American history. The first of this dramatic series will tell the interesting story of that master showman, P.T. Barnum. Don Voris and his orchestra will supply the musical background.