DENTAL CARIES IN THE COTTON EAT(2)

caries-producing activity of processedor whole cereals when fed to cotton rats.1Published with the approval of the Director of the Wisconsin AgriculturalExperiment Station. Supported in part by grants from the Nutrition Foundation,Inc., New York, N. Y., and the National Dairy Council, Chicago, III.We are indebted to Merck and Co., Hahway, New Jersey, for the crystallinevitamins and to Abbott Laboratories, North Chicago, Illinois, for the halibutliver oil.Cotton rats have been found to be highly susceptible to thecariog-enic action of a soft and finely ground natural dietconsisting- of oatmeal, dried whole milk and sugar (Constantet al., '51). Greater tooth destruction resulted from feedinglower levels of the dried whole milk, either by increasing thecereal level or by substituting casein a