Under supervision of physics teacher Malcolm Davies, students from the Rocket Club of the Baltimore Polytechnic Institute demonstrate the thrust of a CO2 cylinder on a student-built dynamometer. They then use the CO2 capsule to propel a rocket on a horizontal wire. Student Julian Palmore compares zinc, sulfur, and a mixture of the two as alternate rocket propellants and explains a diagram of a student-built rocket. Another student explains the laws of uniform acceleration as a rocket rises and falls. Film clips and photos document the actual launch the students' rocket project. Mr. Davies exhibits two related books on the subject: Tomorrow's Air Age by Holmes Alexander and Your Trip in Space by Lynn Poole.