30 DEPARTMENT BULLETIN 975, U. S. DEPT. OF AGRICULTURE. 
Chart 38. One Pound of " Soda " Crackers. 
One pound of " soda " crackers supplies about 1,890 calories of energy, 44 grams 
(about li ounces) of protein, 0.1 gram of calcium, 0.4 gram of phosphorus, 
and 6.7 milligrams of iron. It would furnish, therefore, 54 per cent of the 
energy a man needs daily, 44 per cent of the protein, 15 per cent of the calcium, 
35 per cent of the phosphorus, and 45 per cent of the iron. This is shown in 
the following chart: 
ENERGY 
FROTEIN 
CALCIUM 
PHOSPHORUS 
IRON 
f4fk 
44m 
ifm 
MM 
4fm 
IO 2fl 30 *o SO bo 7o 8o 90 
Chart 38. — Proportions of energy, protein, calcium, phosphorus, and iron needed per man 
per day furnished by 1 pound of soda crackers. 
Group IV. SUGAR AND SUGARY FOODS. 
Chart 39. One Pound of Sugae. 
(2 cups.) 
One pound of sugar supplies about 1.820 calories of energy and contains none 
of the other substances included in these comparisons. It would therefore fur- 
nish 52 per cent of the energy a man needs daily. This is shown in the follow- 
ing chart: 
ENERGY 
PROTEIN 
CALCIUM 
PHOSPHORUS 
IRON 
20 30 40 So 6o 70 SO 90 
Chart 39. — Proportions of energy, protein, calcium, phosphorus, and iron needed per man 
per day furnished by 1 pound of sugar. 
