Excerpt from the report Summary: Modified icing services, together with some form of precooling, resulted in satisfactory transit protection for California citrus shipped in hot weather. Winter shipments cooled almost as well under ventilation as with ice refrigeration except for a 24- to 30-hour delay in reaching cold weather on the northern route. Thermostatically controlled continuously powered fans in iced cars provided the best cooling and transit temperatures. Transit temperatures of oranges and lemons, as affected by various protective services, were obtained in two transcontinental tests from California to New York City. One test of 14 cars of Valencia oranges and lemons was conducted from southern California districts in August. In the other, 12 cars of navel oranges were shipped from the central California area in January. In the latter test, two thermostatically controlled fan cars were included. All other cars were of the conventional electric fan type.