1syuzh. - Experiments with Foucault's pendulum in St. Isaac's Cathedral (Leningrad). 2syuzh. - The process of work of automatic stops on railway transport. 3syuzh. - Operation of a Bromley gear-cutting machine adapted to a lathe. 4syuzh. - Transportation of timber on a single-rail suspended road. 5syuzh. - England. A floating tank is melted across the river.