We cannot live exclusively upon foods which furnish nothing but fuel,
though fuel is the largest item in the diet and one which in an effort to
economize is apt to fall short; hence a food which furnishes nothing but
fuel will not have as high a "score" as a food which will at the same time
supply certain amounts of other essentials, such as protein, calcium
(lime), iron, and the like. By giving definite values to each of the
dietary essentials taken into consideration and comparing the yield of
these from different foods, we may have such a score as follows:[1]

Grain Score value
products per pound

White flour 1,257
Graham flour 2,150
Rye flour 1,459
White bread 1,060
Graham bread 1,525
Cornmeal 1,360
Oatmeal 2,465
Cream of wheat 1,370
Hominy 1,147
Corn flakes 1,090

[1] For the method of calculation and further data see "The
Adequacy and Economy of Some City Dietaries" by H.C. Sherman
and L.H. Gillett, published by The New York Association for
Improving the Condition of the Poor, 105 East Twenty-second
Street, New York City, from which these figures are taken.