DENTAL CARIES IN THE COTTON EAT(19)

entire experimental period. In this respect the results obtained from thesestudies cannot be applied directly to caries production inhumans, for one would not expect humans to consume theseproportions of foodstuffs each meal of the day, or for severaldays. However, the basic findings of these studies a€” that isthe greater cariogenicity of processed cereals and the unpre-had no measurable influence upon the cariogenicity of thesefoods.The lack of plaque material on the teeth of the above animals (fig. 1) showed that the heavy yellow-brown materialand the deep yellow-brown pigmentation of the lesions associated with the feeding of the 67% sucrose diet (fig. 2) wereprimarily due to inclusion of liver extract in the latter diet.The marked degree of softening of the wide enamel portionof the