Tooth enamel Tooth enamel Tooth enamel is one of the four major tissues that make up the tooth in humans and many other animals, including some species of fish. It makes up the normally visible part of the tooth, covering the crown. The other major tissues are dentin, cementum, and dental pulp. It is a very hard, white to off-white, highly mineralised substance that acts as a barrier to protect the tooth but can become susceptible to degradation, especially by acids from food and drink. Enamel is the hardest substance in the human body and contains the highest percentage of minerals, 96%,
The Outermost House Endicott Peabody declared. It was also revealed during this ceremony that the National Park Service (part of the U.S. Department of the Interior) referred to "The Outermost House" on several occasions in its reports that were filed when making its evaluation of the Outer Cape land for National Park status in the 1950s. Today, there are still "Outermost House" types of structures on the Outer Beach, where occupants live in the same fashion that Beston did in the 1920s. Although Beston's original house was claimed by the elements, the Henry Beston Society of Cape Cod has begun a campaign to