While having the above in mind, Mr. Post did not forget to incorporate in his food the parts of the wheat and barley that contain the Phosphate of Potash, and certain other elemental salts demanded by the body for certain purposes.
For instance, it is well known that the soft gray organic substance which fills the brain and the nerve centres throughout the body, is made of Albumen, Water and Phosphate of Potash. Brain work or “nervous work” or worry breaks down and dissipates this gray substance, and it must be daily supplied in equal volume with the amount destroyed, else nervous prostration, with its numerous ramifications and horrors, surely follows. The mission of Grape-Nuts food is clear and plain. It does its work in a sturdy, straightforward, dependable way.
Flour Milling Room.
The wheat and barley used in Grape-Nuts is ground into flour. The entire wheat berry is used, because a large part of the nutriment is under the shell, where the phosphate of potash and other elements absolutely demanded by the body for its proper feeding, particularly for the nerve centres and the brain, are found. Also close under the shell lie the elements of diastase required by the body to change the starchy part of the wheat into sugar or maltose during the process of digestion. White flour millers leave out these important elements in order to make their flour white.
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