The teeth of the carnivorous animals and of carnivorous man were of excellent quality so long as they adhered to their primitive dietary habits. With the change to a new type of diet, such as is now common in Europe and America, savage peoples and others who have modified their diet in a similar manner, there has resulted rapid deterioration of the teeth and caries have become common. The teeth of the primitive Eskimo were excellent. According to Stefansson, there was no word for toothache in their language. To-day the younger generation of the Eskimo dwelling along the Arctic coast of Alaska have teeth as defective as those of children in the States. They have been brought up in great measure on foods such as are available in the grocery stores in the United States, viz.: on flour, sugar, molasses, muscle meats and fish. It is a far cry from such a diet to that of their forefathers, although this could be discovered only as the result of the accumulated data secured through animal experimentation.