Narrated feature about scientific advances made possible by the microscope. Light passes through a glass. Prism causes the light to reflect in other direction. Animated picture of magnifying lens. Workers making glassworks in the Bausch and Lomb Company in New York, mixing sand and glass and then stirring of the molten mass in a furnace. Prince Rupert test of a glass drop. The glass mixture is dropped on ground for test and hammered. Cooling of large pot containing molten glass. Large tongs used to remove clay pot from furnace, and then pot covered with insulating material. Pot broken away after glass is cooled . The big piece of glass is broken into small lenses. Workmen examining and choosing lenses for grinding. Grinding of lenses with polishing agents. Animated picture of lenses in a microscope and the change of the course of the rays of light to show the larger virtual image. Assembly of a microscope. Microscopic view of various germs including typhoid and diphtheria. An unborn chicken in an embryo, viewed through the microscope. Blood circulating in a frog's foot, through the microscope. Malignant blood cells. Crystallization of various chemical elements viewed in the microscope.
Children arrive at school in the Appalachian Mountains of North Carolina. Girls and boys enter the building with paint buckets in hand (perhaps lunch buckets). View of a small wooden outhouse or shed behind the school building.
Man drives a "pocket edition" racing car inside Empire State Building in New York, United States. The Racing car enters elevators and turn in the corridors of the building. Aerial view of the Empire States Building. Man drives on the roof top.
View from above of parade along city street celebrating the centenary of Brooklyn, New York. American flag and bunting decorate Brooklyn Borough Hall (former City Hall) near elevated train station. Crowds of Brooklyn residents and visitors watch from sidewalks and some ticker tape is thrown from buildings. Marchers dressed in white carry oversized forks and spoons and follow a decorated truck float carrying Salvation Army members. The back of the float is a sign reading: "Waste Material Helps Us to Reclaim Broken Humanity." Brooklyn Firemen march in dress uniforms. Behind them, dozens of war veterans march, wearing shiny steel helmets and carrying American flags. New York City Mayor, Fiorello LaGuardia, and other officials, salute with hats over hearts, as American Flags pass. Sign on pole near them reads: "Cruising Taxis prohibited." Boy Scouts, carrying dozens of American and troop flags, parade, followed by men in Native American Indian costumes and then by various fraternal groups in the line of march.
Newspaper picture of a boy named Peter David Levine missing in New Rochelle, New York. Vehicle passes by in front of the boy's school, Albert Leonard Junior High School. Views of Peter Levine and his father, Murray Levine, from home movies, including Peter on a bicycle, Peter with his father on a ball field, and Peter in a boat. Official from the investigation urges viewers to contact the police or Mr. John Edgar Hoover of the U.S. Department of Justice if they have information in the case.
Spring turns back to winter with snow in April in New York City. Views of cars covered with snow skidding and pedestrians slide on a slippery day. People walk on the streets of New York in the snow.
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