It is more difficult to estimate the daily need for lime, iron, and phosphorus than for energy and protein. Yet these are no less important than energy and protein, and some quantitative estimates have been made.

In general, however, if liberal amounts of foods that contain lime, iron, and phosphorus are included in the daily meals, it is unnecessary to make any quantitative estimates. The following figures are given as a matter of interest and general information:

Average family per capita allowance of lime a day......0.70 to 1.0 grams

Average family per capita allowance of iron a day.......0.13 to .15 grams

Average family per capita allowance of phosphorus a day 2.75 to 3.0 grams