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While trying to improve the cooling scheme in use at the farm supplying the Babies' Dispensary with milk, a cooling can was devised which has enabled us to dispense with pasteurization and sterilization during the summer. The cooling can, which accommodates a five-gallon milk-can, is made of galvanized iron No. 20. It is 22 inches high and has a diameter of 14 inches. The cover is hinged on, fits snugly, and can be locked to the can (see illustration).
About 3 to 5 minutes before putting the milk into the milk-can the can is placed in this cooler. A mixture of ice and salt, such as is used by the ice-cream manufacturers, is then packed around the milk-can to the highest point which will be reached by the milk. The milk is then allowed to run from the strainer and cooler in use at the farm directly into the iced
GERSTENBERGER HJ. A PRACTICAL MILK COOLER.. JAMA. 1908;LI(16):1328-1329. doi:10.1001/jama.1908.25410160038002d