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54 THE MAGIC OF THE ATOM SERIES At the City of Hope Medical Center, the following facilities are shown: (1) the stationary cobalt source that uses radioactive cobalt to treat various forms of malignancies; (2) a rotational therapy unit called the "cesium ring," which revolves around the patient and focuses its beam on the diseased area; and (3) the total-body irradiation chamber for studying the effects of radiation on living things. Studies can be car- ried out to determine the effects of massive doses of radiation. Data from these studies will be used for civil defense purposes, for inves- tigating skin grafts and organ transplants, etc. At the UCLA Medical Center the total-body counter facility, which measures the slight ra- dioactivity normally present in the animal or human body, is shown. The counting facility makes it possible to employ new diagnostic pro- cedures requiring much smaller amounts of radioactive materials by eliminating practically all background radiation. ATOM SMASHERS (1954). Explains purposes, principles and methods of particle accelera- tors. Shows how swift atomic projectiles "smash" atomic nuclei apart for scientific examination of subatomic particles. Views of various particle accelerators, including the first 4-inch Cyclo- tron, the giant Bevatron, the Cosmotron, and of photographic trails left by smashed atoms. ATOMIC AGE FARMER (1955). Shows three examples of use of the atom in agricultural re- search; irradiation of corn at Brookhaven for development of stronger strains; studies at Oak Ridge to learn more about growth processes of domestic animals; and "Atomic Tracer Farm" at Argonne, where plants grown in a radioactive atmo- sphere produce radioactive drugs. THE ATOMIC ALCHEMIST (1954) Illustrates role of chemistry in nuclear development, how atomic energy products are opening new fields in chemistry, effects of radiation on liquids and on solids, and the search for new elements. ATOMIC BIOLOGY FOR MEDICINE (1956). Explains experiments to discover effects of radiation on mam- mals, including effects on lungs, eyes, bones and other tissues, cell division, and tumors. ATOMIC CITIES (1956). Shows precautions taken to assure that residents of communities near atomic energy installations are not endangered by the plant's use of radioactive materials. Describes routine checks of sur-