QUESTIONS
Write a recipe for waffles, using sweet milk and baking powder and 3 eggs.
Write two recipes for waffles, using sour milk and soda (with additional leavening, if necessary) and 1 egg in the one, and 2 eggs in the other.
How many waffles does the given recipe make?
RELATED WORK
LESSON CXVI
MEASUREMENT OF THE FUEL VALUE OF FOODS
HOW FOOD IS ASSIMILATED.—The uses of the foodstuffs,—carbohydrates, fats, protein, ash, water, and vitamines,—were given. It was stated that these foodstuffs either (a) "burned" (i.e. united with oxygen) and produced energy, (b) built the body, or (c) aided in regulating body processes.
All parts of the body are composed of microscopic cells. By the process of digestion the foodstuffs are made entirely soluble (see Solution and Digestion); they are then further altered, i.e. split to their end products and absorbed through the walls of the alimentary canal. The blood carries the digestion products to all parts of the body. The blood also carries oxygen,—which has been breathed into the body from the air,—to all parts of the body. The body cells then select the foodstuffs that they need to carry on their work. Some cells pick out the fuel materials—carbohydrates, fat, or protein—and oxygen. Fuel foods when oxidized, produce energy. Other body cells select some of the body builders—protein or ash—and use these for building or repairing tissue. The cells which build bone choose ash and the other materials needed for building bones; the cells which build muscle choose protein and the other materials needed for building muscle.
Little is known regarding the use of vitamines by the body cells, other than that they are indispensable for the growth and maintenance of the body.