The following example by Waller, gives a rather liberal standard English diet, for a man doing a moderate amount of muscular work.
| CARBON. | NITROGEN. | ||
| Foundation: | 1 lb. bread | 117 | 5.5 |
| ½ lb. meat | 34 | 7.5 | |
| ¼ lb. meat | 84 | — | |
| Accessories: | 1 lb. potatoes | 45 | 1.3 |
| ½ pint milk | 20 | 1.7 | |
| ¼ lb. eggs | 15 | 2.0 | |
| ⅛ lb. cheese | 20 | 3.0 | |
| —- | —— | ||
| Total | 335 | 21 grammes. |
This divided up into meals works out roughly as follows (Hutchison):—
| Breakfast |  | Two slices of thick bread and butter. |
| Two eggs. | ||
| Dinner |  | One plateful of potato soup. |
| A large helping of meat with some fat. | ||
| Four moderate sized potatoes. | ||
| One slice of thick bread and butter. | ||
| Tea | A glass of milk and two slices of thick bread and butter. | |
| Supper | Two slices of thick bread and butter and 2 oz. of cheese. | |
From the preceding data, practical problems as to dietaries are easily solved. Thus if it be required to find
how much oatmeal, milk, and butter would be required to give a sufficient quantity of albuminoids, fats, and carbohydrates to an adult male,
the calculation may be based on the figures in the table on p. 32, or the following figures may, for the sake of convenient calculation, be taken as representing the percentage amount of each of these chief food principles contained in the foods named:—
| ALBUMINOIDS. | FATS. | CARBOHYDRATES. | |
| Oatmeal | 12 | 6 | 60 |
| Milk | 4 | 3 | 5 |
| Butter | 2 | 88 | — |
- Let
- o = number of ounces of oatmeal required.
- m = number of ounces of milk required.
- b = number of ounces of butter required.
- Then
- (12o + 4m + 2b ∕ 100 = 4.5 ozs. of albuminoid
- (6o + 3m + 88b)/100 = 3 ozs. of fat
- (60o + 5m)/100 = 14.25 ozs. of carbohydrate,
according to Moleschott’s diet.
When these equations are worked out by substitution and transference—
- o = 19.2 ounces.
- m = 55.4 ounces.
- b = 0.24 ounces.