Although wheat is generally used, its food value is not superior to that of other grains. It is doubtless because we are "used to" wheat that we have favored it more than other cereals.

COMPARING WHEAT WITH OTHER GRAINS.—Make a comparative study of the composition of the following:

Wheat Flour and Corn-meal.—From U.S. Department of Agriculture, Bulletin No. 28, tabulate the percentage composition of wheat flour and of corn-meal. Which contains the more fat? Which contains the more ash?

Corn-meal does not contain as much protein as does wheat. The protein in corn-meal differs from that in wheat; it does not have the elastic property of the protein of wheat. It is this property which makes the latter so satisfactory in bread making. For this reason, it is always best to combine corn-meal with wheat flour or some other cereal in preparing corn breads.

It should be noted that corn-meal contains more fat than wheat flour, and it compares favorably in digestibility with wheat flour. There is a difference in flavor, but no difference in the nutritive value of yellow and of white corn-meal.

Wheat Flour and Oatmeal.—From U.S. Department of Agriculture, Bulletin No. 28, tabulate the percentage composition of wheat flour and of oatmeal. Which contains the more protein, fat, and ash? Which contains the more carbohydrates?

Oatmeal contains more protein, fat, and ash than any of the cereals commonly used. It is a very tough cereal and requires long cooking in order to make it palatable.

Wheat Flour and Rice.—From U.S. Department of Agriculture, Bulletin No. 28, tabulate the percentage composition of wheat flour (all analyses, average). Now tabulate the percentage composition of rice (average). Which contains the more carbohydrates? Which, the more protein and ash?

Polished rice contains the least ash and protein of all the common cereals. It is also deficient in fat in comparison with the other cereals.

Unpolished rice, however, contains more than twice as much ash as the polished cereal. It also contains more fat and protein. [Footnote 94: Composition of unpolished rice: protein, 8.02; fat, 1.96; carbohydrates, 76.98; ash, 1.15.] Hence it compares favorably with the composition of other